The Razer Hammerhead True Wireless are passable truly wireless earbud headphones. While their earbud design doesn't go deep into the ear canal, unfortunately they're quite large and don't come with different silicone tip sizes, so they aren't the most comfortable. Their sound reproduction is very poorly-balanced, and they produce a very dark and muddy sound profile. While their 'Gaming Mode' does lower latency quite a bit, especially on Android and iOS, it'll still likely be too high for competitive PC gaming.
The Razer Hammerhead are mediocre truly wireless headphones for mixed usage. Their earbud design might be preferred by people who don't like the in-ear fit of most truly wireless headphones, but unfortunately there aren't different tip sizes included. They're a decent option for using at the gym as they feel quite stable in the ear, and are rated IPX4 for resistance to sweat, though we don't test for this. Unfortunately, their dark and muddy sound profile may not be well-suited for most genres, and their poor noise isolation means they won't help block background noise during or daily commute.
The Razer Hammerhead True Wireless are disappointing headphones for neutral sound listening. Their sound profile is quite inaccurate and produces very dark and muddy audio. On the upside, their frequency response consistency is excellent, so you should experience the same sound reproduction every time you wear them.See our Neutral Sound recommendations
The Razer Hammerhead True Wireless may not be the best choice for your daily commute or to use while traveling. They block almost no background noise, meaning they won't help block bus or plane rumbles, or noisy people sitting next to you. They also aren't the most comfortable due to their large earbuds which press against the inside of your ear. While they're nice and portable due to their truly wireless design, their 3.7-hour battery life is slightly disappointing and won't last through most flights.See our Commute/Travel recommendations
The Razer Hammerhead True Wireless are a good option for the gym. Despite not having different sized tips or stability fins, they feel quite stable in the ear, and shouldn't fall out during most runs or light workouts. Unfortunately, their rather large fit may not be the most comfortable for everyone, but they're rated IPX4 for sweat resistance, though we don't currently test for this.See our Sports/Fitness recommendations
The Razer Hammerhead True Wireless aren't recommended for office use. Their bulky design likely won't be comfortable for full workdays, and their battery will need to be charged through the day to last an entire shift. They also block almost no background noise, meaning they won't help you concentrate when surrounded by chatty coworkers. On the upside, they don't leak very much audio, so you should be able to turn them up without bothering those around you.See our Office recommendations
The Razer Hammerhead True Wireless aren't recommended for wireless gaming. While their latency does seem to get quite a bit lower while in 'Gaming Mode', it's still likely too high for most serious gamers. They're also Bluetooth-only, so while they can connect to a phone, tablet, or PC, they won't be able to connect to an Xbox One or PS4. Their sound profile is also very dark and inaccurate.See our Wireless Gaming recommendations
The Razer Hammerhead are Bluetooth-only headphones that can't be used wired.
Like most Bluetooth headphones, the microphone on the Razer Hammerhead is disappointing, and these headphones aren't recommended for phone calls. While on a phone call, your voice will sound muffled and the other person won't be able to hear you in even moderately noisy environments.
The Razer Hammerhead True Wireless have a similar style to the Apple AirPods, but with a matte black finish and shorter stems. They have a green Razer logo on the back of each earbud, and 'Razer' engraved on the case.
The Razer Hammerhead True Wireless aren't the most comfortable due to their large earbuds. Unfortunately, they don't include different sized tips, and the earbuds tend to put quite a bit of pressure on the inside of the ear, despite not going too deep into your ear canal.
The controls on these headphones are sub-par. While basic commands are easy to use, enabling 'Gaming Mode' and pairing mode is complicated and difficult. They also don't have volume controls, so you'll need to take out your phone to adjust the volume, which is disappointing.
Like most in-ear headphones, the Razer Hammerhead True Wireless don't trap any heat inside your ear, so you shouldn't notice a temperature difference while wearing them. This makes them a good option for sports as you shouldn’t sweat more than usual.
Like most truly wireless headphones, the Razer Hammerhead True Wireless are extremely portable. Even their charging case is on the smaller side, and should easily slide into most pockets.
The charging case of the Razer Hammerhead True Wireless is acceptable. It looks and feels very similar to the case of the Anker SoundCore Life P2, but unfortunately has a very wobbly lid that opens easily when dropped or bumped.
The build quality of these headphones is decent and both the headphones and the case are made entirely out of plastic. While the earbuds themselves feel fairly durable, the case feels a bit cheap, and the lid is very wobbly, with loose hinges. They're also rated IPX4 for sweat resistance, though this isn't something that we currently test for.
The Razer Hammerhead True Wireless feel very stable in the ears, even without stability fins. Unfortunately, they don't come with different sized tips, but the earbud is large enough that they should hold in place well for most people even during runs or light workouts.
The Razer Hammerhead True Wireless' sound profile is very dark and unbalanced throughout all frequency ranges. Their drastically overemphasized bass range and recessed mid and treble ranges mean that music will sound very muddy and lacking in detail.
Despite their earbud fit and lack of optional tip sizes, the frequency response consistency of these headphones is excellent and you should get a consistent sound reproduction every time you use them.
The bass accuracy of the Razer Hammerhead True Wireless is poor. While the entire range is fairly even, it's overemphasized by a large amount which will provide a very boomy and muddy sound.
The mid accuracy of the Razer Hammerhead True Wireless is mediocre. While its low-mid range is overemphasized, it gets quite recessed in the mid-mid and high-mid ranges, where most leads and vocals sit. This will push them to the back of the mix, where they will sound quite distant and weak.
The treble accuracy of the Razer Hammerhead True Wireless is bad. Almost the entire range is very recessed, which means vocals will be quite dull and lacking in detail and brightness.
The peaks and dips performance of the Razer Hammerhead True Wireless is alright. Most of the mid-mid and high-mid range is recessed, which will push vocals and leads to the back of the mix. The large peak in high-mid/low-treble, as well as the peaks in mid-treble, will make some higher frequency voices or instruments sound piercing and sharp.
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 reproduction. The L/R drivers of our unit were also very well-matched, though these results are only valid for our unit and yours may perform differently.
Like most in-ears, the soundstage of the Razer Hammerhead True Wireless is poor. This is mainly due to their lack of interaction with the pinna, which is a key factor in giving the sense of a large and in-front soundstage. However, thanks to their earbud design that doesn't go deep into the ear canal, they tend to have a more open soundstage than closed-back in-ears.
The weighted harmonic distortion of the Razer Hammerhead True Wireless is decent. Most frequencies fall within very good limits, except in the treble range, though even there it rarely goes too high. This should result in fairly clear and pure audio reproduction.
The Razer Hammerhead True Wireless block almost no ambient noise and have bad noise isolation. On planes or buses they won't help at all to block the sound of the engine, and they'll only slightly block out some higher frequencies like the hiss of an AC unit. On the upside, this is good if you like to listen to music while still being aware of your surroundings.
The leakage performance of these headphones is good. The majority of the leakage is in higher frequencies, meaning it'll sound thin, so you should be able to listen to music fairly loud without bothering those around you, unless you're in a very quiet environment.
The recording quality of the microphone on these headphones is disappointing. Like most Bluetooth headphones, speech transmitted or recorded with this mic sounds muffled and lacking in detail.
Like most Bluetooth headphones, the noise handling of the microphone on these headphones is inadequate. While the person you're speaking to should be able to hear you in quiet situations, it'll be difficult in even moderately noisy environments.
The battery life of these headphones is adequate. Their single-charge battery life of 3.7 hours is on the shorter side for truly wireless headphones, but their case holds an additional three charges, which is decent. They also feature a standby mode to help conserve battery, and you can use either earbud while the other is charging, which is nice.
Unfortunately, the dedicated companion app for these headphones is only mediocre. It doesn't have a graphic EQ, and only allows you to toggle 'Bass Boost' or 'Treble Boost' on/off, as well as see your current battery level.
Update 02/24/2020: We tested latency with gaming mode enabled and measured 111ms of latency on PC, 22ms on Android, and only 6ms on iPhone. This is a big reduction in latency overall, but the difference will likely only be noticeable on mobile.
The Razer Hammerhead True Wireless are Bluetooth-only truly wireless headphones. While they don't support aptX or aptX(LL), they have a dedicated 'Gaming Mode' which helps reduce latency considerably when using Android or iOS.
These headphones are Bluetooth-only.
These headphones are Bluetooth-only. Their charging case charges via USB-C, and a short charging cable is included. If you want a wired pair of gaming in-ears, consider the Turtle Beach Battle Buds.
These headphones can only be used via Bluetooth on PCs and aren't compatible with the PS4. While their latency is lower than most Bluetooth headphones, it still may be too high for more competitive gamers.
These Bluetooth-only headphones aren't compatible with the Xbox One.
The Razer Hammerhead True Wireless are very similar to many other truly wireless headphones, but are the only ones that we've tested so far with a dedicated gaming mode. While their latency in this mode is low for Bluetooth headphones, it still may be too high for more serious gamers, and their muddy and dark sound profile likely won't be suitable for most genres of music. We suggest taking a look at our recommendations for the best truly wireless earbuds, the best wireless earbuds, and 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 as they're much more comfortable, feel more premium, and have a much better-balanced sound profile. On the other hand, the listening experience is more consistent among users with the Hammerhead, and with gaming mode enabled, their latency is lower on non-iOS devices.
The Apple AirPods 2 Truly Wireless 2019 are better truly wireless headphones than the Razer Hammerhead True Wireless as they're 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; they're much more comfortable, feel more premium, have a much better-balanced sound profile, block more background noise, and have a dedicated companion app. On the other hand, the Hammerhead have lower latency with gaming mode enabled.
The Anker SoundCore Liberty Air 2 Truly Wireless are much better truly wireless in-ears than the Razer Hammerhead True Wireless since they have a much better-balanced sound profile, block more ambient noise, are more comfortable, have better controls, better battery life, a dedicated companion app, and feel more premium. On the other hand, the Hammerhead have a lower latency with gaming mode enabled.
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 Battle Buds are wired and can be plugged directly into the controller of your console. Their microphone also performs a lot better than the Razer.
The Razer Hammerhead True Wireless are better wireless earbuds than the JBL TUNE 220TWS Truly Wireless. The Razer have much more bass, though some people may find them too bass-heavy. 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.