Design and features:This Bluetooth wireless noise canceling portable ear-insert model provides very good sound and excellent active noise reduction. Its ear plug-like design and electronic noise canceling feature reduce both outside noise and sound leaking out into your environment. The headphones work with or without the noise canceling feature being turned on. You can use the noise-canceling feature without listening to music. Additional features include Either earpiece can be used alone for one ear monitoring of Bluetooth streamed audio and telephone communications. Charging/carrying case has built-in rechargeable battery that the manufacturer claims can be used to recharge the earphone batteries for an additional 16 hrs. of playtime for a total of 20 hrs. Manufacturer claims water resistance. Free Razer Audio app download for Apple and Android devices adds additional features. The headphone noise cancellation control default setting switches between ANC on, ANC off, and ambient sound monitor (Pass-through) modes by touch control on either earbud; the default settings can be customized using the app to enable or disable this touch control feature. Has touch control for music player transport, call connect/disconnect, Ambient mode, ANC on/off, digital voice assistant activation. Has Gaming mode that manufacturer claims allows the earbuds to function at a lower latency while gaming to provide better audio/video sync. Supports compatible digital voice assistants when used with Bluetooth connected devices that have those features. Headphones pause audio when earbud is removed and resume audio when placed back in ear; this feature can be turned off from the app. Has quick charge feature: 15 min of charging will provide up to 3 hrs. of playtime with ANC off. Razer Audio app download for Apple and Android mobile devices can be used to adjust the tonal balance of the earphones using tonal presets, custom EQ, switch between noise canceling on/off and ambient monitoring, perform an earbud fit test, customize touch control settings, check battery levels, and update firmware. Bluetooth connected Apple mobile devices using iOS Version 5 and above will show the battery level. THX certified. This model comes with Four pairs of ear pieces in various sizes and types, USB-A to USB-C connector charging cable, charging cradle/recharger battery/carrying case, Quick Start Guide.
Sound quality: We found the Hammerhead True Wireless Pro delivers sound quality that falls in the very good range - it reproduces music and voice very well although it does have some noticeable sonic quirks and excellent active noise reduction. With the noise cancelling mode engaged and the Razer Audio app Equalizer set to the THX mode (as received state of the earphone) the bass (as in bass drums, bass guitars, stand-up bass, etc.) has good impact and goes deep, but is a bit boomy. The midrange (voices, guitars, horns, etc.) is even, but is somewhat grainy, and slightly hazy and congested. The treble (cymbals, the upper range of violins, etc.) is extended, but is a touch smeared and sizzly, and slightly prominent. Does a decent job of recovering room ambience, but is a touch echoey and closed sounding. Good dynamics. Mixed character - warmish bass with neutral midrange and treble (cymbals, the upper range of violins, etc.). The overall sound can best be summarized as somewhat grainy and a bit bassy. The Razer Audio app tonal adjustments have a noticeable effect on the sound. Noise Canceling: Excellent noise reduction across the entire frequency range with the low frequencies reduced the most. Orientation changes the noise reduction characteristic - when the noise is coming from the rear a bit less high-frequency noise can be heard. A very faint rushing sound can be heard in quiet environments when there is no audio program to drown it out.
Comfort: As typical of in-ear models they produce a sense of pressure in the ear canal opening might be uncomfortable for some. Users with small earbowls might find that the earphone body feels like they stick out too far and may lever out of place but that they will stay in place during casual use and are fairly stable even during vigorous head movement. Users with medium & larger sized ear bowls will probably find that this model stays in place with no problems for casual use and that they are fairly stable even during vigorous head movement. Hitting the stem that hangs out of the ear can knock an earphone lose and cause it to fall out of the ear.
