The Razer Hammerhead True Wireless are truly wireless headphones with an onboard 'Gaming Mode' function for low latency via Bluetooth. They're decently well-built and do a good job of staying in your ears, but they're not especially comfortable due to their large buds and lack of other ear tip sizes. They have a bass-heavy sound profile, too, which makes mixes dark and muddy. Their sub-four-hour continuous battery life also isn't particularly impressive.
The Razer Hammerhead are mediocre for mixed-use. While their earbud design makes them easy to carry around, they aren't the most comfortable. They have a stable fit and should stay in place during light workouts. Still, they struggle to reduce almost any background noise, including bus and plane engines or office chatter. Their dark and muddy sound may not be suited for most genres of music. While enabling 'Gaming Mode' can significantly reduce audio latency, it may not be enough for serious gaming. They also have a very short continuous battery life, though this can vary with usage patterns.
The Razer Hammerhead are passable for neutral sound. Their default sound profile is very bass-heavy, which can clutter and muddy vocals and lead instruments. Like most in-ears, they also have a poor passive soundstage that feels small and limited. On the upside, they deliver audio very consistently.
The Razer Hammerhead are an unremarkable option for commuting. They barely reduce background noise like bus or plane engines, and they may not be comfortable for long periods of time. Although they're very portable, their sub-four-hour continuous battery life may not be enough to get you through most flights. Using their 'Gaming Mode' helps to drop latency on mobile devices, which is good if you enjoy watching videos on your way into the office or to class.
The Razer Hammerhead are very good for sports. These earbuds are easy to take with you to the gym, and even though they don't come with differently sized ear-tips, they should be stable enough for running or light workouts. They feel decently sturdy, and although we don't currently test for it, they also have an IPX4 rating for water resistance. However, not everyone is likely to find their fit comfortable.
The Razer Hammerhead are disappointing for office use. Their bulky design isn't the most comfortable for long listening sessions. Their short continuous battery life also means that they need to be charged throughout your workday. They also don't really block out office chatter. However, they don't leak too much sound, so you can turn up the volume on your favorite tracks without annoying nearby coworkers.
The Razer Hammerhead aren't suitable for wireless gaming. While they have a lower latency if you use their 'Gaming Mode', it's still likely to be too high for gaming. These headphones are also Bluetooth-only, so while you can use them on your mobile devices, they can't connect to consoles.
The Razer Hammerhead are Bluetooth-only headphones that can't be used wired.
The Razer Hammerhead are disappointing for phone calls. Recorded speech is muffled and lacking in detail. Their integrated mic struggles to separate speech from background noise, even in moderately loud environments. These earbuds also do a poor job of isolating background noise, so you may have trouble hearing what's being said on a call in louder environments.
The Razer Hammerhead have a sleek, matte finish. While their ear-stem design is reminiscent of the the Apple AirPods 2 Truly Wireless 2019, they also have shorter stems and a green Razer logo on both earbuds' backs. They also have the manufacturer logo engraved on their carrying case. Aside from the monochrome black colorway of our test unit, these earbuds are also available in white or pink.
These earbuds are reasonably comfortable. They're relatively large and don't come with any differently sized ear tips. Even though they don't go too deep into your ear canal, they can still apply a lot of pressure to the inside of your ear, which can cause some discomfort during longer listening sessions.
These earbuds have a disappointing control scheme. Although basic commands are easy to use, these earbuds don't have on-board volume controls, so you have to adjust the volume on your device. The overall list of controls can be a little complicated to remember. You can turn on an individual bud by holding it down for two seconds, which also rejects incoming calls or enables your phone's voice assistant. Touching and holding either bud for half a second answers or ends calls and pauses or plays media. Double tapping either bud accepts incoming calls, allows you to switch to another call, or skips to the next track. A triple tap of either bud skips to the previous track. Tapping and holding either for six seconds puts them into their Bluetooth pairing mode. You can enable their 'Gaming Mode' with a double-tap followed by a two-second hold, which also clears all paired devices from the buds. You should receive audio prompts for answering and rejecting calls, enabling your phone's voice assistant, powering on your earbud, enabling and disabling 'Gaming Mode', and Bluetooth pairing.
The Razer Hammerhead are remarkably breathable. They don't really trap heat in your ear so if you wear them during a workout, you shouldn't sweat more than usual.
Like most truly wireless earbuds, the Razer Hammerhead are exceptionally portable and can easily fit into most pockets. Their charging case is also fairly small.
The Razer Hammerhead's carrying case is okay. While it looks and feels similar to that of the Anker SoundCore Life P2 Truly Wireless, the lid is very wobbly and can easily open when dropped or bumped.
These headphones have satisfactory build quality. Although both the earbuds and the case are made of plastic, the earbuds feel more durable, while the case has a wobbly lid and loose hinges, making it feel cheap. The earbuds are also rated IPX4 for water resistance, but we don't currently test for this.
The Razer Hammerhead True Wireless are stable earbuds. They should stay in place if you're running or working out. On the downside, they don't come with differently-sized ear tips to help you find the right fit for your ear size.
The Razer Hammerhead's sound profile is very bass-heavy and muddy. While the extra bass emphasizes the thump and rumble of genres like EDM and hip-hop, it can also help to immerse you in action-packed gameplay. However, the dark treble reduces the clarity and detail of your mixes so they may not be as well-suited for vocal-centric content. If you aren't a fan of their default audio reproduction, they also have 'Bass Boost' and 'Treble Boost' EQ presets that can be enabled via their companion app.
The frequency response consistency of these headphones is superb. Sound reproduction should be consistent every time you use them.
The bass accuracy of the Razer Hammerhead True Wireless is poor. There's an overall overemphasis across the range that emphasizes the thump and punch of EDM and hip-hop tracks. However, some may find this muddy and boomy.
The mid accuracy of the Razer Hammerhead True Wireless is okay. The overemphasis in the low-mids clutters vocals and lead instruments, while the dip throughout the rest of the mid-range nudges vocals and lead instruments to the back of the mix and makes them sound weak and distant.
The treble accuracy of the Razer Hammerhead True Wireless is mediocre. Most of the treble range is underemphasized, so instruments lose their detail and presence while sibilants like S and T are slightly dull.
The peaks and dips performance of the Razer Hammerhead True Wireless is alright. The extended bump from the mid-bass to low-mid range adds boominess and muddies vocals and lead instruments. Most of the mid-mid and high-mid range is recessed, which weakens vocals and leads and pushes them to the back of the mix. The uneven low-treble range can give an alternatively harsh quality to the upper harmonics of vocals and lead instruments and make them sound somewhat dull, depending on their frequency. Another peak in the mid-treble range makes sibilants, like S and T sounds, piercing and painful.
The stereo imaging of the Razer Hammerhead True Wireless is excellent. The group delay is below the audibility threshold for the entire range, ensuring a tight bass and transparent treble. The L/R drivers of our unit are also very well-matched in regards to phase, amplitude, and frequency response, which should ensure the accurate placement of objects like voices and footsteps in the stereo image. However, these results are only valid for our unit, and yours may perform differently.
Like most in-ears, the Razer Hammerhead True Wireless have a terrible passive soundstage. A large and spacious soundstage depends on interaction with the outer ear, which earbuds bypass. While these earbuds have a more open soundstage than other closed-back in-ears, it still sounds fairly small and limited.
The weighted harmonic distortion of the Razer Hammerhead True Wireless is decent. There's a couple of peaks in the low-treble range at moderate listening volumes, but it may not be noticeable to all listeners. Otherwise, the rest of the frequency responses fall within good limits and should result in fairly clear and pure audio reproduction.
These results are only valid for these test settings. We only tested 'Gaming Mode' for its Bluetooth latency.
The Razer Hammerhead True Wireless have terrible noise isolation capability. They don't block out any bass-range ambient noise like the low rumble of bus or plane engines. They do a similarly terrible job of filtering out background chatter. They do a little better when it comes to treble-range ambient noise, like the high-pitched hum of an A/C unit, but their performance in this respect is still poor.
These headphones have good leakage performance. Most of the leakage is concentrated in the higher frequencies and sounds thin. If you like to listen to your music at high volumes, it shouldn't bother those around you unless you're in a very quiet setting like a library.
The recording quality of the microphone on these headphones is disappointing. While your voice should sound natural, it's likely to be muffled, thin, distorted, and lacking in detail.
The microphone's noise handling capability is middling. If you're talking in even moderately noisy spaces like a busy street, people on the other end of the line are likely to have trouble understanding what you're saying.
These headphones have a mediocre battery performance. Their sub-four-hour continuous battery life is much shorter than other truly wireless headphones, like the EarFun Air Pro True Wireless, but it's worth noting that battery life can vary with usage. Their case supplies roughly three additional charges, which should last you more than a day of use. They take about an hour to fully charge so you shouldn't be away from your music for too long. They also have standby mode to help conserve battery life, and you can also use either earbud while the other one is charging.
The Razer Hammerhead True Wireless companion app is passable. It's fairly limited in terms of overall functionality, as it only shows the remaining charge and allows you to toggle between their 'Default', 'Bass Boost', and 'Treble Boost' EQ presets. If you're looking for a pair of truly wireless Razer headphones with a graphic EQ, try the Razer Hammerhead True Wireless Pro.
The Razer Hammerhead True Wireless have acceptable Bluetooth connectivity. They support Bluetooth 5.0, but not NFC or multi-device pairing, so you can't stream music from your phone while remaining connected to your computer. Without using their 'Gaming Mode', latency on PC and iOS devices is quite high, which could be disruptive while streaming videos or movies. They perform better in this respect when it comes to mobile Android devices. They perform significantly better in this regard across most devices when using their 'Gaming Mode'. However, it's worth noting that different apps and devices compensate to varying degrees for latency, so your real-world experience may vary.
Note: Enabling the earbuds' 'Gaming Mode' reduced their latency on PC to 111ms, on Android to 22ms, and on iOS to 6ms.
These headphones can only be used on Bluetooth-enabled PCs and aren't compatible at all with PS4 consoles. Although they have lower latency than most other Bluetooth headphones, you may find the latency still too high for competitive gaming.
The Razer Hammerhead True Wireless are available in three color variants: 'Black', 'Mercury', and 'Quartz'. We tested the 'Black' variant, but expect the other variants to perform similarly overall.
If you come across another variant of these earbuds, let us know in the discussions below so that we can update our review.
The Razer Hammerhead are true wireless earbuds with a 'Gaming Mode' feature via Bluetooth that reduces audio latency, which is helpful if you want to watch movies or videos on your phone, but it may still be too high for serious gamers. Unlike the EPOS GTW 270 Hybrid Truly Wireless, they don't require a secondary USB-C dongle to offer low-latency audio, though the Razer aren't as well-built or as comfortable. They also have fewer sound customization features than the Razer Hammerhead True Wireless Pro.
If you're looking for alternatives, check out our recommendations for the best truly wireless earbuds and the best wireless earbuds. If you need more noise isolation, see our picks for the best noise cancelling earbuds and in-ears.
The Apple AirPods Pro Truly Wireless are better truly wireless in-ears than the Razer Hammerhead True Wireless. The Apple are much more comfortable, feel more premium, and have a much better-balanced sound profile. On the other hand, the listening experience is slightly more consistent among users with the Razer, and with gaming mode enabled, their latency is lower on non-iOS devices.
The Apple AirPods 2 Truly Wireless 2019 are slightly better truly wireless headphones than the Razer Hammerhead True Wireless. The AirPods are more comfortable, feel more premium, and have a better-balanced sound profile. On the other hand, the Razer have a more consistent listening experience among users, feel much more stable in the ear, and have much lower latency on non-iOS devices with 'Gaming Mode' enabled.
The Samsung Galaxy Buds Truly Wireless are much better truly wireless in-ears than the Razer Hammerhead True Wireless. The Samsung are comfier, feel better-built, have a much better-balanced sound profile, block more background noise, and have a dedicated companion app with a broader range of sound customization features. On the other hand, the Razer have lower latency with gaming mode enabled.
The Razer Hammerhead True Wireless Pro are a slightly better pair of headphones than the Razer Hammerhead True Wireless. The Pro are more comfortable, better-built, and have graphic EQ and presets so that you can customize their sound profile. Their mic also offers better overall performance, and they have longer continuous battery life. While they also have an active noise cancelling (ANC) feature, it doesn't offer better noise isolation than their passive isolation performance.
The Razer Hammerhead True Wireless are better wireless earbuds than the JBL TUNE 220TWS Truly Wireless. The Razer have a much more bass-heavy sound profile, though some people may find this to be overwhelming. They also have a better battery life, a dedicated app with EQ presets, and lower latency. On the other hand, the JBL are available in a wider range of colors and have a much better microphone.
The Anker SoundCore Liberty Air 2 Truly Wireless are much better truly wireless in-ears than the Razer Hammerhead True Wireless. The Anker have a much better-balanced sound profile, block more ambient noise, are more comfortable, have better controls, better battery life, and feel more premium. They also have a companion app with more customization features, including a graphic EQ. On the other hand, the Razer have a lower latency with gaming mode enabled.
The Monster Clarity 101 AirLinks Truly Wireless are more versatile Bluetooth earbuds than the Razer Hammerhead True Wireless. Mobile gamers will appreciate the Razer's unique low-latency 'Gaming Mode' on iOS and Android, but the earbuds have a poorly balanced sound-profile and mediocre fit. The Monster earbuds don't have the most balanced sound, either, but aren't as boomy, have a much longer battery life, and isolate against more noise.
The Razer Hammerhead True Wireless are better headphones for mixed-use than the Razer Hammerhead USB-C ANC. The True Wireless have a more stable fit and can deliver a significantly more thumpy, punchy bass. They also have a companion app with EQ presets. However, they have a mediocre battery life as well as high latency across PC, iOS, and Android. In comparison, the wired USB-C ANC have a better build quality and include volume controls. Their in-line mic also performs better too, and their audio latency is very low. Unfortunately, while they have an ANC feature, it struggles to cut down bass range noise.
The Turtle Beach Battle Buds are a better pair of gaming headphones than the Razer Hammerhead True Wireless. While the Razer are better for daily use thanks to their truly wireless design, they're Bluetooth-only and therefore cannot be used with a PS4 or Xbox One. On the other hand, the Turtle Beach are wired and can be plugged directly into the controller of your console. Their microphone also performs a lot better than the Razer.