TOZO NC7 Truly Wireless  Headphones Review

The TOZO NC7 are truly wireless in-ears with a similar design to other products from this manufacturer, like the TOZO NC9 Truly Wireless and the TOZO T12 Truly Wireless. They're mostly made of matte plastic and have a glossy plastic outer ring. Their shape is rounded, though, so they're slightly bulky in your ears. They're only available in Black.

They're decently comfortable. You have lots of different sizes of earbud tips to help you get the best possible fit. However, the buds are a little bulky and sit a bit deep in your ear, which may not feel comfortable for everyone. Fortunately, pressing their touch-sensitive controls doesn't push them further into your ear.

The touch-sensitive controls aren't the most intuitive, but they're pretty easy to use once you get the hang of them. There are voice prompts for pairing and switching between ANC and Transparency Mode, which lets in some ambient noise so you can hear people talking around you. There are also audible beeps as you raise the volume and a separate sound to tell you when you've reached minimum or maximum volume.

On the left bud:

• Tap once: Switches between ANC and Transparency Mode.
• Tap twice: Skips to the previous track.
• Press and hold: Turns the volume down.

On the right bud:

• Tap once: Play/pauses your audio.
• Tap twice: Skips to the next track.
• Press and hold: Turns the volume up.

If you get a phone call, you can tap either bud to answer and hold either bud to end or reject the call. Pressing either bud three times activates the voice assistant, too.

They have superb breathability. Like most in-ears, they don't trap a lot of heat, so you don't sweat more than usual while wearing them during your workouts at the gym.

These buds are incredibly portable thanks to their small and lightweight design. Their carrying case isn't very large, either, so it fits easily into your pocket or bag.

The case is good. It's mostly made of plastic, and it even supports wireless charging. There are even four LED lights to indicate the battery level.

These headphones have a good build quality. Like the TOZO NC9 Truly Wireless, they're mostly made of plastic, with a matte finish on the exterior and a glossy finish on the interior. They're even rated IPX6 for water resistance, so they're protected against high-pressure water streams from any angle, making them more than suitable if you wear them on a rainy day. However, the earbud tips seem like a potential weak point over time since the material isn't the most durable.

The TOZO NC7 are stable. They stay in your ears during casual listening sessions or even moderately intense workouts at the gym. However, they don't have stability fins, and they can fall out during more intense workouts.

• TOZO NC7 headphones
• 6x ear tips
• Charging case
• USB-C to USB-A charging cable
• Manuals

These headphones have a slightly excited, V-shaped sound profile. A little extra emphasis in the low-bass adds some thump to your audio. As indicated by the dip in the mids, vocals and lead instruments are pushed towards the back of the mix, and they sound weak and distant, too. Sibilants like S and T sounds are bright and a bit piercing to those especially sensitive to these sounds. There aren't any sound customization features, so you can't adjust their sound.

These headphones have excellent frequency response consistency. Once you get a proper fit with the included earbud tips, you'll get a consistent audio delivery each time you use them.

The low-bass is overemphasized, so you feel the deep thump and rumble in your audio, especially with bass-heavy tracks like Starboy by the Weeknd. The rest of the range is quite balanced, though, so the punch and fullness in the bass is present without becoming overwhelming.

The mid accuracy is very good. The range is pretty balanced, but the mid-mids and high-mids are slightly underemphasized. As a result, vocals and lead instruments are pushed towards the back of the mix, and they're weak and distant.

These headphones have decent treble accuracy. The slightly underemphasized low-treble hurts the comprehensibility of vocals and lead instruments. However, the peak in the mid-treble makes sibilants, like cymbals or S and T sounds, piercing and painful.

These headphones have a decent peak and dips performance. The peaks and dips are minor, indicating that the headphones can control their sound profile well. The peak in the low-bass adds thump to your audio, while the slight dip in the mid-bass takes some punch away. The slight dips in the mid-mids and high-mids nudge vocals and lead instruments toward the back of the mix, and they sound weak and distant as a result. The peak in the mid-treble makes sibilants like cymbals piercing and painful.

Headphones from this manufacturer tend to have good imaging, which is an overall sign of quality control and ergonomics. Our unit's L/R drivers are well-matched in phase, frequency, and amplitude response, which helps ensure a stable stereo image so sound objects are accurately placed within it. Their weighted group delay also falls below the audibility threshold, resulting in a tight bass and transparent treble. However, imaging can vary between units.

These headphones have a poor passive soundstage, which is to be expected. Due to their in-ear design, they bypass the outer ear, which is one of the key factors in creating a large and out-of-body soundstage. As a result, sound seems like it's coming from inside your head rather than from speakers placed all around you. They also have a closed-back design, so their soundstage isn't perceived to be as open as that of open-back headphones.

They have a great weighted harmonic distortion performance. All frequencies fall within good limits, resulting in clear and pure audio reproduction.

These are the settings we used to test these headphones. Our results are only valid when using these settings.

The TOZO NC7 have impressive noise isolation. With their ANC turned on, they can block out background noises like bus and plane engines, voices, and the hum of nearby AC units.

Note: You can't turn off the ANC feature on these headphones, though you can cycle between it and their Transparency Mode, which lets in some ambient noise. We tested these headphones completely off to measure their passive noise isolation performance for comparison.

The TOZO NC7 have an amazing leakage performance. They don't leak a lot of audio, and escaping audio sounds quite thin. You can listen to music at loud volumes without really bothering those around you.

The integrated microphone has a satisfactory recording quality. Your voice sounds natural and understandable to whoever's on the other end of the line. However, it's a bit thin.

The microphone has a middling noise handling performance. It struggles to separate your voice from background noise, so the person on the other end of the line may have trouble understanding you, even if you're only calling from a moderately noisy setting.

The manufacturer advertises a battery life of 10.5 hours, and in our tests, they lasted for just over eight hours off of a single charge. However, battery life can vary depending on usage. You can also listen to audio through one bud while the other is charging, which is handy.

The TOZO NC7 have fair Bluetooth connectivity. They don't support NFC pairing for quick pairing with an NFC-enabled device, and unlike the JLab Audio JBuds ANC 3 True Wireless, you can only pair them with one device at a time. Their latency on PCs, as well as on iOS and Android devices, is also too high to be suitable for gaming. Some apps compensate for latency differently.

You can't use these headphones with a wired connection. They come with a USB-C to USB-A cable, but it's just for charging the case.

You can only wirelessly connect these headphones to a Bluetooth-enabled PC for full microphone and audio compatibility.

The charging case carries around two extra charges for the earbuds. You can charge the case using the included USB-C cable. It also supports wireless charging.