AfterShokz Xtrainerz Bone Conduction MP3 Swimming Headphones review – Fill your underwater world with sound

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REVIEW – Listening to music can make exercising more tolerable. Witness the huge case market for sweat-resistant armbands, cases, and headphones. Listening to music when you’re outside running, biking, or otherwise being exposed to environmental hazards (i.e. cars, trucks, and other motorized vehicles) can be dangerous to your situational awareness. Aftershokz, a company that specializes in bone conduction headphones, has several offerings that can mitigate these dangers. The latest is a product the AfterShokz Xtrainerz Bone Conduction MP3 Swimming Headphones review – Fill your underwater world with sound. This is a set of headphones that include memory and controls with a built-in MP3 player. I was sent one to test in the Black Diamond colorway, which is a dark base color with white flecked accents. (They also come in a Blue Sapphire.)

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What is it?

AfterShokz Xtrainerz Bone Conduction MP3 Swimming Headphones are bone-conduction headphones with onboard sound file storage and playback.

What’s in the box?

  • AfterShokz Xtrainerz Bone Conduction MP3 Swimming Headphones
  • silicone storage case
  • USB-A charger/transfer harness
  • waterproof earplugs

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Hardware specs

  • 8-hour battery life
  • IP68 waterproof
  • comfortable under a swim cap
  • 4 GB MP3 storage
  • Supports MP3, WAV, WMA, AAC, and FLAC

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The charging/transfer harness snaps around one of the temple pads

Design and features

The AfterShokz Xtrainerz Bone Conduction MP3 Swimming Headphones are coated in a rubberized material and are totally sealed against water and dust. The only non-rubberized surfaces are the contacts that connect to the charger/transfer harness. If you’ve never used bone-conduction hearing devices before, it can be a bit of a shock: the tone pads sit just in front of your ear canal, hooked over your ears for stability. They do not enter your ear canal at all, so your environmental awareness is only slightly diminished when you’re listening to music. Other noises, conversations, etc. will be audible unless you have the volume very loud.

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Volume, playback, and other functions are all controlled via a set of buttons grouped around the metal contacts that attach to the charger.

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While other products from Aftershokz have Bluetooth connectivity, these do not – they can only playback files that have been uploaded to the unit via the USB-A cable included. Like other waterproof devices I’ve used, sealing them against water and using them underwater prevents usage as a typical Bluetooth headset. (If you need Bluetooth connectivity, rather than waterproofing, I highly recommend their OpenComm Bluetooth headset – I purchased a unit with personal funds in January after they were reviewed here. I was working at home at the time, and they were fantastic for my eight-hour shifts doing phone support.)

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Setup is very simple. Clip the headset into the harness, plug the USB plug into your computer, and drag compatible files into the “Xtrainerz” drive that shows up.


The sound while cycling and generally working around the house and yard was excellent. It was nice to not have my music interrupted by announcements of miles pedaled or other notifications, while still getting those notifications on my iPhone.

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While the sound from the AfterShokz Xtrainerz Bone Conduction MP3 Swimming Headphones are clear and full, the bass response is muted, compared to external speakers or even over-ear headphones, for obvious reasons. If you can live without heart-thumping bass, though, you’ll enjoy the experience as well as any other in-ear or on-ear products. To get a good bass response, there’s just got to be moving air, and that takes a woofer of some size.

Due to scheduling changes brought on by the pandemic, I’m not currently a member of a pool, so could not test these during swimming like I did with the last waterproof headset I tested. Hopefully, the New Year will bring relaxed restrictions, and, for me, a less busy schedule, so that I can get back into regular laps. If that happens, I’ll be sure to return and update this review with the performance, should there be any glaring items of interest. I anticipate none, but, then, no one anticipated a global pandemic and shipping crisis, did they?

What I like

  • Enhances safety for cycling, running, and other outdoor exercising
  • Full-fidelity sound

What I’d change

  • I wish I could connect this to my Audible account
  • I’d also love to use this with Apple Music

Final thoughts

We are an audio-saturated culture. From the radio in our cars to Muzak in every store, to gas pumps that play music – it’s everywhere. Personalizing this constant barrage is something we’ve been doing since the first Sony Walkman shipped. Having this ability while we’re swimming and doing other active sports requires a little more from a device than what you get with your latest daily driver phone’s earbuds. AfterShokz Xtrainerz Bone Conduction MP3 Swimming Headphones, by offering onboard storage and full IP68 ingress protection has a great product here, at a very competitive price point. Adjacent to our move from tapes, discs, and iPods, however, has been our move to streaming services. Even though I’m able to download files from Apple Music to my devices, these files cannot be dragged over to the Xtrainerz. Only files that I ripped from CDs or bought online can be converted to the proper format and installed. While that’s a huge dent in ease of use, at this point, many of us still have files from our “Rip, Mix, Burn” days. But I don’t think that’s going to last too far into the future. If there were some way to get files through the existing subscription services more easily, I’d find this device much more useful. As is, it’s still great, but my listening options are a bit limited without a whole lot of work.

Price: $149.99
Where to buy: Company Webstore and Amazon
Source: The sample of this product was provided by Aftershokz.

4 thoughts on “AfterShokz Xtrainerz Bone Conduction MP3 Swimming Headphones review – Fill your underwater world with sound”

  1. Gadgeteer Comment Policy - Please read before commenting
  2. Great headphones, I use them for swimming every day at the gym. Just an FYI, you CAN use audible for it. Select your profile from, select “How to listen” choose “MP3 & Visually impaired Devices”. It will have you install AudibleSync (beware it’s ugly as sin). Follow the setup and instructions for install and linking your account, once you have completed this simply plug in your headphones and add it as an authorized device in the program. You can then copy your Audible books to your Aftershokz.

    1. This app is only available for Windows, and you have to use a supported device. Currently, according to Glen from Audible support, “You can download and transfer audiobooks using Audible Sync App. However, your device is not supported.” Apparently, you have to authenticate the device in the Sync app, and XTrainerZ aren’t on the list. I don’t have a PC to test if it can use any other device’s setup, but Glen answered pretty quickly and explicitly that XTrainerZ aren’t supported. It did not sound like the first time he’d heard of them.

      Are you saying that the device was authenticated properly when you used the Sync app? If so, I will try to find someone I know with a PC. (I don’t know many! Lifelong Mac guy here!)

      1. I am not sure. To be honest I just moved to mac myself, and I havn’t used it. I just found out there is no Mac version. As for authenticating unless they changed something fairly recently it should sync with any standard MP3 player.

      2. Update: BOOO HISS HISS BOOO
        It appears Amazon/Audible no longer support these devices. This is sad, tho there are work arounds by downloading your audio books and then removing the DRM from it. (Not advocating piracy for the record). At this point they will be regular boring MP3’s, and used on any device. Not a problem for someone that lives in the code world, but definitely a non-starter for the average user. AfterShokz will either have to update their product to support DRM expiring media, or Amazon loosen up their grip on DRM (yeah right)

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