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AfterShokz Trekz Air Bone Conduction Headphones Review

Tested using Methodology v1.3.1
Reviewed Nov 07, 2018 at 11:28 am
Latest change: Test bench update Nov 21, 2019 at 11:27 am
AfterShokz Trekz Air Bone Conduction Picture
Mixed Usage
Neutral Sound
Wireless Gaming
Wired Gaming
Phone Call

The AfterShokz Trekz Air are unique headphones designed for outdoors sports like running, cycling and for people who want to hear everything around them. They are not your typical headphones that send music inside your ears, but they use bone conduction to send vibrations through the temples, so you feel the bass instead of hearing it, which is why they don’t measure as well as they actually sound. These are very niche headphones for outside athletes who want to be able to monitor their surroundings, but still have background music while being physically active. They are mediocre for any other usage.

Our Verdict

5.2 Mixed Usage

Poor for mixed-usage. The AfterShokz Trekz Air were designed as sports headphones, and their unique bone conduction technology and openness make them a bad choice for office work and commuting. Their sound profile is actually better than what it measures, but they are not meant to be critical listening headphones. They also have too much latency for TV and gaming uses.

  • Open design good for outdoor sports.
  • Stable and portable.
  • Bass and treble delivery varies significantly across users. Sensitive to positioning.
  • Mediocre-at-best sound.
  • High leakage.
3.5 Neutral Sound

Bad for neutral listening. Without having sound directed into the ear canal and using bone conduction, you don’t hear the bass, you feel it. Our measurements aren’t accurate for now because they were our first bone-conducting pair and didn't measure as typical headphones. They sound better than what the scores reflect, but overall, their sound quality is not good enough to be considered neutral listening headphones.

5.2 Commute/Travel

Inadequate for commuting and traveling. By design, they don’t isolate any noise, so you’ll hear everything from engine rumbles to ambient chatter in public transports. They are also open and leak a lot, which will be annoying for people around you since they can hear what you are listening to.

7.5 Sports/Fitness

Decent for sports. The AfterShokz Trekz Air are very breathable since there’s nothing covering your ears and their design also makes them stable for most activities. They are very lightweight and decently portable. If you’re a runner or cyclist who’s concerned about cars in the streets, their bone-conducting design will be a good fit for you since they don’t isolate noise but allows you to have background music while training.

4.8 Office

Poor for office use. Their design doesn’t block any noise, so if you’re looking for headphones to help you concentrate on your work, these are not it. They also leak quite a lot, so your coworkers will be able to hear your music.

4.2 Wireless Gaming

Bad for gaming. The microphone is mediocre, and they don’t isolate any sound if you want to feel immersed in your game. The AfterShokz Trekz Air also have too much latency to be suitable for gaming since what you’ll hear won’t match what’s on the screen. They also can’t be used wired with console controllers.

4.1 Wired Gaming
  • 5.2 Mixed Usage
  • 3.5 Neutral Sound
  • 5.2 Commute/Travel
  • 7.5 Sports/Fitness
  • 4.8 Office
  • 4.2 Wireless Gaming
  • 4.1 Wired Gaming
  • 5.3 Phone Call
  1. Updated Nov 21, 2019: Converted to Test Bench 1.3.1.
  2. Updated Nov 21, 2019: Converted to Test Bench 1.3.
  3. Updated Nov 07, 2018: Review published.
  4. Updated Nov 05, 2018: Our testers have started testing this product.
  5. Updated Nov 03, 2018: The product has arrived in our lab, and our testers will start evaluating it soon.
  6. Updated Nov 01, 2018: We've purchased the product and are waiting for it to arrive in our lab.

Compared To Other Headphones

Comparison picture

The AfterShokz Trekz Air are decent sports headphones with a unique design that uses bone conduction to make you feel the bass instead of hearing it. Their build is comfortable and stable enough for most sports but might need a few adjustments from time to time. They are designed for outdoor use so you can have background music while running or cycling and still be aware of what is going on around you. They are a very niche pair of headphones, and when compared to other sports headphones below, the Trekz Air are the only one with bone conduction. See our recommendations for the best headphones for working out, the best wireless earbuds for running, and the best Bluetooth earbuds.

AfterShokz Aeropex Bone Conduction

The AfterShokz Aeropex Bone Conduction are an upgrade over the AfterShokz Trekz Air Bone Conduction. They're both bone conduction headphones, but the Aeropex have a much better control scheme, a longer battery life, and are rated IP67 for dust and water resistance. On the other hand, the Trekz Air use a standard micro-USB charging cable as opposed to the Aeropex's proprietary cable.

Shokz OpenRun Bone Conduction

The Shokz OpenRun Bone Conduction are slightly better headphones than the AfterShokz Trekz Air Bone Conduction. While both headphones are bone conduction headphones with an ear hook design, the OpenRun have a longer-lasting continuous battery life, and their mic has a better recording quality. They also support Bluetooth 5.1.

Shokz OpenRun Pro Bone Conduction

The Shokz OpenRun Pro Bone Conduction are better bone conduction headphones than the AfterShokz Trekz Air Bone Conduction. While both headphones are comfortable and well-built, the OpenRun Pro have a longer-lasting continuous battery life, a companion app, and a better carrying case. They also support Bluetooth 5.1, and their mic delivers better overall performance.

Jaybird Freedom 2 Wireless 2017

The Jaybird Freedom 2 Wireless 2017 are better and more versatile headphones than the AfterShokz Trekz Air Bone Conduction. The Jaybird are more portable, and since they are closed-back in-ears, they isolate ambient noise and don’t leak much. However, the AfterShokz are designed for runners and cyclists who want to hear what’s going on around them. With their bone-conducting design, the AfterShokz have a better soundstage and act more like background music while you train. They also have better battery life than the Jaybird.

Apple AirPods (1st generation) Truly Wireless

The Apple AirPods (1st generation) Truly Wireless are open headphones that don’t isolate much noise and are more versatile than the AfterShokz Trekz Air Bone Conduction. The Apple sound quality is better, and the case gives you up to five extra charges, for a total of around 25 hours of battery life. On the other hand, the around-the-head design with over-ear hooks of the AfterShokz is more stable for sports, and they have more on-the-go controls on the headphones. The Apple are a lot more portable but have a worse wireless range.

Anker SoundBuds Curve Wireless

The Anker SoundBuds Curve Wireless are better and a cheaper alternative for typical sports headphones, but if you really want to hear everything around you while training, the AfterShokz Trekz Air Bone Conduction might be a better choice. The AfterShokz have a better build quality with thicker cables and rubberized coating. On the other hand, the Anker are more portable, come with a good hard case, and have a longer battery life.

Plantronics BackBeat Fit Wireless

If you compare the Plantronics BackBeat Fit Wireless to the AfterShokz Trekz Air Bone Conduction, the Plantronics are better typical headphones, especially sound-wise. This is due to the Plantronics being in-ear and not bone-conducting like the AfterShokz. The Plantronics are more stable, more portable, thanks to the flexible band, and isolate more sound. If you’re looking for openness and want to stay aware of your surroundings while training with background music, the AfterShokz might be the better choice. The AfterShokz are also more comfortable and use a more recent version of Bluetooth.

Bose SoundSport Wireless

The Bose SoundSport Wireless are better sports headphones than the AfterShokz Trekz Air Bone Conduction. The Bose are more typical headphones with in-ear drivers, inlcude an open design that doesn’t isolate noise, and have a neutral, even sound profile. The Bose won’t be as open as the bone-conducting design of the AfterShokz, but you should be able to monitor your surrounding with the Bose as well. On the other hand, the AfterShokz have better build quality, with rubberized coating, and have a better soundstage and battery life.

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Test Results

Type Bone Conduction
Enclosure Open-Back
Wireless Yes
Transducer Bone Conduction

They have an unconventional style since they sit on your temples, next to your wide-open ears. They have a rigid headband that goes behind the head but isn’t quite a neckband. The Trekz Air have over-ear hooks for stability during physical activity, and their overall look is quite low-profile.

Weight 0.06 lbs
Clamping Force
0.32 lbs

The AfterShokz Trekz Air are very lightweight headphones that have a comfortable build. Since they are not like your typical headphones that sit inside, on or around your ears, you don’t feel them too much. However, you feel bass through vibration, so bass-heavy genres like dubstep might get a bit annoying after long listening sessions, but this shouldn’t be too much of a problem for other music genres or podcasts. Also, depending on the thickness of your glasses, it might be harder to find a comfortable fit with two bands going over your ears.

OS Compatibility
Ease Of Use Okay
Feedback Good
Call/Music Control Yes
Volume Control Yes
Microphone Control No
Channel Mixing
Noise Cancelling Control N/A
Additional Buttons No

The control scheme of the Trekz Air is good, but it has its flaws. The feedback of the buttons is good, but the ease-of-use is average-at-best. The buttons are small and near each other. You get a volume rocker, a power button that is also for pairing and turning the volume up, and a multi-function button for play/pause, take/end calls, and to skip to the next song, but they don't have a multi-press action for going to the previous track, which is disappointing. Also, the volume rocker is behind your right ear, while the multi-purpose button is on the left earbud, making the control scheme awkward to use. Each action is confirmed by a beeping tone. On the upside, you have EQ presets that you can switch between by holding both volume buttons, but there is no way of knowing on which preset you are other than sound difference.

Avg.Temp.Difference 0 °C

These headphones do not sit inside, on or around your ears, so there is no heat trapped. This makes them a good choice for sports since you should not sweat more while using them.

L 5"
W 3.1"
H 1.1"
Volume 17 in³
Transmitter Required N/A

The AfterShokz Trekz Air aren’t bulky, but they are not as portable as the similarly designed BackBeat Fit. The headband of the Trekz Air is more rigid and doesn’t allow them to fold into a more compact format. They are portable enough to fit into larger sports pants or shorts but aren’t foldable enough for your jeans. On the upside, they come with a small soft case to protect them and to help with traveling, but it does add a bit of bulk.

Type Soft case
L 5"
W 4.1"
H 1.2"
Volume 25 in³

They come with a small soft case that should protect the headphones against scratches and very light water exposure. However, it will not protect the headphones as well as harder cases.

Build Quality

The Trekz Air have good build quality, and they don’t feel like they would get too damaged after a few accidental drops. The headphones are mainly covered by a rubberized coating but are not waterproof. The earbuds are dense and should survive impacts. On the other hand, the headband that goes behind your head is thinner than the rest of the build but is quite flexible.


Thanks to their over-ear hook design, they are stable enough for most sports and should not fall to the ground. However, the ear pieces move around toward your ears, especially when running. You might need to re-adjust the fit of the headphones on your head a few times when working out.

Headshots 1
Headshots 2
In The Box

  • Trekz Air headphones
  • Soft carrying pouch
  • USB to micro-USB charging cable
  • Foam earplugs
  • Manuals

Sound Profile
Bass Amount
-19.21 dB
Treble Amount
1.24 dB
Frequency Response Consistency
Avg. Std. Deviation
2.03 dB

The frequency response consistency is poor. The bass and treble delivery of these headphones was surprisingly inconsistent across our 5 human subjects. We measured more than 15dB of variation in bass and 6dB in the treble range. This seemed to be mostly affected by placement and tightness of the headphones on the temples. It should be noted that we measured the bass of these headphones using microphones placed in the ears of our humans subjects, since at the moment we don't have a method for measuring the tactile bass created by bone conduction headphones. The tactile bass of these headphones may be more consistent across multiple users.

Raw Frequency Response
Bass Accuracy
Std. Err.
15.66 dB
Low-Frequency Extension
118.15 Hz
-26.57 dB
-14.73 dB
8.05 dB

The bass of the Trekz Air is lacking. These bone conduction headphones don't produce much bass by creating sound pressure, which is why they have such a low score in our measurements. However, they do transmit an average amount of tactile bass through the temples, but even their tactile bass isn't very extended. So overall they do produce an average amount of punch on the kick drums, but won't produce any thump or rumble in the sub-bass range. We have plans for measuring the tactile bass of headphones/speakers in the future in order to assess the bass of bone conduction headphones better. Also, their bass delivery varies significantly across users, and is sensitive to the quality of fit. The response here represents the average bass response and your experience may vary.

Mid Accuracy
Std. Err.
8.19 dB
11.22 dB
6.52 dB
1.65 dB

The mid-range is poor. The overall response of these headphones in the mid-range is rather uneven, overpowering, and with a 10dB tilt favoring lower frequencies. This somewhat compensates for the lack of bass on these headphones but will be at the expense of making the mix, especially vocals and lead instruments, sound muddy and cluttered.

Treble Accuracy
Std. Err.
10.04 dB
10.83 dB
7.47 dB
7.66 dB

The treble of the Trekz Air is sub-par. The overall response throughout the treble range is uneven and overemphasized. This makes the overall sound of these headphones noticeably bright, especially when combined with their lacking bass. Also, their treble delivery varies noticeably across users. The response here represents the average response and your experience may vary.

4.46 dB
3.34 dB
Weighted Group Delay
Weighted Amplitude Mismatch
Weighted Frequency Mismatch
Weighted Phase Mismatch

The imaging performance is sub-par. The GD graph shows that the high group delay only happens in the bass range, where these headphones don't produce much sound pressure. Most of the bass is tactile and transmitted through the temples. So the actual experience of their bass isn't as bad. Additionally, the L/R drivers of our test unit were decently matched in amplitude, but showed a big mismatch in phase and frequency response which results in a stereo image that is highly sensitive to positioning of the headphones and could easily get skewed. It should be noted that we measured the bass of these headphones using microphones positioned in the ear canal of our dummy head, since at the moment we don't have a method for measuring the tactile bass created by bone conduction headphones. We have plans to develop methods for measuring the tactile bass created by such headphones in the future.

PRTF Accuracy (Std. Dev.)
3.14 dB
PRTF Size (Avg.)
-0.22 dB
PRTF Distance
10.39 dB
Acoustic Space Excitation

The soundstage is mediocre. Due to the fact that the drivers are positioned on the temples, they get very high scores for openness and acoustic space excitation. However, they didn't perform very good in the PRTF tests, probably due to them interacting mostly with the cheekbones. They show very little pinna interaction/activation, but a decent 10KHz notch. Overall the soundstage is open, but doesn't feel very large, natural or speaker-like.

Weighted Harmonic Distortion
WHD @ 90
WHD @ 100
Noise Isolation
Isolation Audio
Overall Attenuation
-0.03 dB
Noise Cancelling No
0.02 dB
0.09 dB
-0.2 dB

The isolation performance is poor. Since these headphones do not cover the ears, it is normal for them to provide no isolation. However, this is by design since and they are supposed to allow you to be fully aware of your surroundings. However, they come with foam earplugs in the box, so if you want to cancel out more ambient noise and use the Trekz Air as more regular headphones, you can. Sound quality is slightly affected when using the earplugs. It feels like the bass is louder but the treble more muffled. You can also check out the Plantronics Backbeat Fit or the Sony WI-SP500 if you need an open headset for running outdoors.

Leakage Audio
Overall Leakage @ 1ft
57.65 dB

The Trekz Air, despite their bone conduction design, have a poor leakage performance. The significant portion of the leakage sits between 700Hz and 20KHz which is a broad range. The overall level of leakage is also loud. With the music at 100dB SPL, the leakage at 1 foot away averages at 58dB SPL and peaks at 79dB SPL, which is significantly louder than the noise floor of an average office.

Microphone Style
Detachable Boom
Mic Yes

The AfterShokz Trekz Air have a mediocre microphone. In quiet environments, speech recorded or transmitted with this mic will sound thin, muffled and lacking in detail. In noisy situations, they are able to separate speech from background noise in moderately loud environments like a busy street, but will struggle in louder places.

Recording Quality
Recorded Speech
397.39 Hz
FR Std. Dev.
3.11 dB
3,368.2 Hz
Weighted THD
40.01 dB

The AfterShokz Trekz Air have a sub-par recording quality. The LFE of 397Hz results in a recorded/transmitted speech that is relatively thin. The HFE of 3.4KHz suggests a speech that is muffled and lacks detail. Also, the response between the LFE and HFE points is rather uneven which could negatively affect the intelligibility of speech.

Noise Handling
Speech + Pink Noise
Speech + Subway Noise
18.19 dB

The noise handling of the Trekz Air's microphone is average. It achieved a speech-to-noise ratio of 18dB in our SpNR test, indicating that it is able to separate speech from ambient noise to a decent degree in moderately loud environments. However, it will struggle to do so in louder situations.

Active Features
Active Features
Battery Type
Continuous Battery Life
7.2 hrs
Additional Charges
Total Battery Life
7.2 hrs
Charge Time
1.9 hrs
Power Saving Feature
Standby mode
Audio While Charging
Passive Playback
Charging Port micro-USB

They have a decent battery life that should last you long enough for your daily workouts, but you might have to charge them daily or every other day. They take about 2 hours to charge fully and you can’t use the headphones while they are charging. They can also go into standby mode and last for about 20 days according to AfterShokz's specs sheet. For a noticeably better battery life, check out the AfterShokz Aeropex Bone Conduction or the Shokz OpenRun Bone Conduction.

Active Features
App Support
App Name N/A
Android N/A
macOS N/A
Windows N/A
ANC Control
Mic Control N/A
Room effects
Playback Control
Button Mapping N/A
Surround Sound N/A

The AfterShokz Trekz Air do not have a compatible app for customization options.

Bluetooth Version
Multi-Device Pairing
2 Devices
NFC Pairing
Line of Sight Range
189 ft
Default Latency
231 ms
aptX Latency
aptX(LL) Latency

They support Bluetooth version 4.2 and can connect to simultaneously to 2 devices which is useful if you often switch between your PC and your phone. Their pairing procedure is easy, however, enabling multipoint pairing is a little more involved and requires that you; Enter pairing mode, then press and hold the multifunction button and volume+ button for 2-3 seconds until you hear "Multipoint Enabled." Pair first device. Turn your headphones off and re-enter pairing mode, then pair the second device. They also do not have NFC which could have made this multi-point pairing procedure a lot easier.

Like most Bluetooth headphones, the Trekz Air have too much latency for video content or gaming.

Non-Bluetooth Wireless
Non-BT Line of Sight Range
Non-BT Latency
Analog Audio
USB Audio
Detachable N/A
Length N/A
Connection N/A
Wired Latency

They do not have a wired connection.

PC / PS4 Compatibility
PC / PS4 Analog
PC / PS4 Wired USB
PC / PS4 Non-BT Wireless
Xbox One Compatibility
Xbox One Analog
Xbox One Wired USB
Xbox One Wireless
USB Input
Line In
Line Out
Optical Input
RCA Input
Dock Charging
Power Supply

The AfterShokz Trekz Air do not have a dock, like most open sports-oriented headphones.