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H2O Audio Flex Waterproof Headphones

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Product Code: 25390

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Whether you're splashing around in the pool or running full speed in the rain, the X-1 (previously H20 Audio) Flex Waterproof Headphones will bring you clear, continuous music the entire way through.

• Can withstand heavy perspiration, rinsing after active use and submersion up to 3ft. / 1m underwater.
• 3 different sizes of earplugs for a universal fit.
• Includes an attachment for the jack that makes the headphones compatible with older H2O Audio housings.
• 9mm dynamic drivers.


  • 2.5 star rating (Based on 13 Reviews)

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  • rating star
    By from
    on 5/27/2013

    This product stopped working in one channel after 2 weeks.  The service staff at was excellent about making this right.

  • rating star
    By from
    on 2/5/2013

    The unit works perfectly, the angled mini-connector is a good idea... and audio quality is respectable.  The Round foam plug doesn't hold in my ears, so luckily I can use the soft plugs sold by NuTechnology.  In result I have a perfect swimmer headset.

  • rating star
    By from
    on 7/6/2012

    I thought these were stereo sound, but on one side works. I do like the L-shaped connector.

  • rating star
    By from
    on 6/4/2012

    I have small ears and the round ear pieces do not work for me so I bought the H2O waterproof headphones and replaced the round ear pieces that fall out of my ears and are not water proof with an old pair of "cylinders with fins" ear pieces that fit into my ears and act as conduits of sound and are waterproof ear plugs...I wish the company would give the buyer a choice of the type of ear piece -- rather than send different sizes of the same model ear piece, offer two different designs -- one is bound to work and will keep the buyer coming back.

  • rating star
    By from
    on 11/20/2011

    The headphones did not work as my ears continued to fill up with water.  I swim 100 laps three times a week.
    Great service however as i did receive a prompt refund.

  • rating star
    By from
    on 11/13/2011

    In spite of trying all possibilities of different size buds that come with it and a cap that would be firm to stabilize the position, I find these headphones close to useless. This is my first product review...just doing it for others so that other swimmers don't waste their money!

  • rating star
    By from
    on 10/18/2011

    They do not work at all. I tried on another pair at Sports Chalet and they didn't work either. It's the brand not the headphones.

  • rating star
    By from
    on 8/12/2011

    I have tried others but this pair was the first to work. It lasted about a year and just bought my second pair!

  • rating star
    By from
    on 8/2/2011

    I swim every day and love the light weight of these, but they fall out of my ears and the left one doesn't work after only 2 weeks.

  • rating star
    By from
    on 8/1/2011

    These headphones fall out sometimes and the cord gets tangled a lot. Sound is good, worse the lower you swim


H2O Audio

H2O Audio, now known as X-1 Audio, features a line of rugged casings for MP3 players, which allows for the use of expensive and delicate digital music players during water sports activities. Partnering directly with leading MP3 manufactures, H2O Audio has created a line of sturdy and practical casings, patented waterproof headphones, and underwater accessories. Established by athletes for athletes, H2O Audio is made up of a team of avid swimmers, surfers, wake-boarders, sky-boarders, and kayakers.

H2O Audio began in 2001 as a graduate project at San Diego State University that aimed to bring music to Scuba divers. It just didn’t seem fair that runners and other terrestrial athletes could train with the benefit of music, while swimmers, surfers, divers, and other aquatic athletes were bound to silence. The company's beginnings pre-dated the widespread popularity of the iPod® and other MP3 players, so the first dive case was designed to house a portable CD player.

After many prototypes and adjustments, the first production model case was made for the iRiver MP3 player in 2002. It came equipped with the power-amplified diving headphones similar to those that are integrated into the current, state-of-the-art "iDive Underwater Apple iPhone/iPod MP3 Housing." More recently, H2O Audio incorporated in-ear technology into the "Surge" and "Surge Sportwrap" headphones.

In 2005, the company designed the first waterproof cases for iPod. For the first time, swimmers and surfers could take their music into the water. As the iPod evolved so did H2O Audio, which led to the innovation of the "Interval Waterproof Headphone System," which fits both the 3rd and 4th generation iPod Shuffle™. In a constant effort to improve sound quality and comfort, H2O Audio also introduced the "iPod Shuffle Swimbelt" and the "Amphibx Armbands," which come in three sizes to accommodate many sizes of MP3 players.

H2O Audio product design and development is based on years of prototypes and close collaboration with top athletes like Olympic swimmer Natalie Coughlin and triathletes Greg and Laura Bennett, and surfer Laird Hamilton.

Today, H2O Audio's corporate headquarters are just feet from the ocean (in other words, testing grounds) in Pacific Beach, California. The company is committed to developing the best high-performance waterproof and sweat-proof sport headphones, armbands, and other accessories on the market. H2O Audio doesn't want to be limited to producing a cheap, featureless player simply because it's waterproof. The company strives instead to create something that functions well in any conditions, providing high-quality sound, easy control of the audio device, and access to music no matter the conditions.