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  • H2O Audio CB1-BK Flex All Sport Waterproof In-Ear Headphones (Onyx Black)
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H2O Audio CB1-BK Flex All Sport Waterproof In-Ear Headphones (Onyx Black)


List Price: $29.99
Price: $19.99 & FREE Shipping on orders over $35. Details
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In Stock.
Onyx Black
  • Powered by H20 Audio, these headphones are sweatproof and waterproof
  • Designed for athletes in all sports
  • 100% waterproof up to 3 feet of depth
  • Rich, full-range sound from 9mm drivers
  • Easy to clean--just rinse with water
2 new from $19.99

Frequently Bought Together

H2O Audio CB1-BK Flex All Sport Waterproof In-Ear Headphones (Onyx Black) + LifeProof Armband for iPhone 4/4S - Retail Packaging - Black
Price for both: $64.98

Buy the selected items together


Special Offers and Product Promotions

Color: Onyx Black
  • Amazon Free 30-Day Tech Support: This item is eligible for free tech support for 30 days from the date of delivery. Over the phone, our trained technicians can help you set up, configure, connect, and troubleshoot so you can start enjoying your new purchase. Owners of qualifying products can reach Tech Support by calling 1-800-362-5703. Learn more


Technical Details

Color: Onyx Black
  • Waterproof

Product Details

Color: Onyx Black
  • Product Dimensions: 1 x 3 x 7.5 inches ; 1.4 ounces
  • Shipping Weight: 1 pounds (View shipping rates and policies)
  • Shipping: Currently, item can be shipped only within the U.S.
  • ASIN: B004BU6GLM
  • Item model number: CB1-BK
  • Average Customer Review: 3.4 out of 5 stars  See all reviews (34 customer reviews)
  • Date first available at Amazon.com: November 30, 2010

Product Description

Color: Onyx Black

From the Manufacturer

Serious Sound, Seriously Waterproof

H2O Audio is the leading provider of high-performance waterproof, sweatproof sport headphones and accessories for active people everywhere. Developing products in collaboration with some of the world's most celebrated athletes, Team H2O Audio includes; Gold Medal Swimmer Natalie Coughlin, World Class Triathletes, Greg and Laura Bennett, and Elite Stand Up Paddler Slater Trout. As athletes they're at the top of their sport, and reflect our passion for performance. Studies show that music plays a critical role in training, improving pacing, sustaining motivation and making workouts more fun. No matter your athletic level, training with music – in any environment - only makes you better!

Greg Bennett World Class Triathlete wearing the Flex All Sport Waterproof Headphones
Greg Bennett World Class Triathlete wearing the Flex All Sport Waterproof Headphones
Built to withstand heavy perspiration, rinsing after use and complete submersion underwater
Built to withstand heavy perspiration, rinsing after use and complete submersion underwater
The Flex All Sport Waterproof Headphones comes in Onxy Black, Super Hero Blue, Envy Green and Power Pink
The Flex All Sport Waterproof Headphones
comes in Onxy Black, Super Hero Blue,
Envy Green and Power Pink

H2O Audio offers a functional, complete, waterproof, sweatproof solution for almost any athletic pursuit. Our first product redefined the concept of portable music by allowing divers to bring music to 300 ft. below the surface. Now expanded into a collection of waterproof headphones, armbands and cases, H2O Audio removes boundaries and allows all athletes, and all people, to enjoy listening to music in any environment including in, around and under water.

You can't stop this sound! Through water, sweat, rain and whatever you can put them through Flex All Sport Buds will keep delivering clear and rich sound. Affordable and personal, pick from 4 colors and 3 ear plug sizes for a combo that's uniquely yours. Whether you're working out or hanging out, these headphones are more than just your average ear bud!

100% Waterproof // Sweatproof

Don't let sweat or moisture ruin your headphones, go waterproof! H2O Audio's patented waterproof technology allows these headphones to withstand heavy perspiration, rinsing after active use and even submersion up to 3ft./1m underwater. Stop replacing your earbuds due to sweat and moisture corrosion, get the waterproof solution and let the music play on.

Personal and Versatile

No matter where you're going or what you're doing, Flex headphones will stay with you. All ears are created differently, so three different sizes of Elastomer ear plugs make it easy to find the stay-put fit that's best for you. Better fit also means better noise isolation for quality sound in the water or out.

Small Price, Big Sound

Flex Headphones deliver clear, rich sound through 9mm drivers. Flex doesn't sacrifice sound quality for durability or price.

For Athletes, For You

Stand up paddle, run in the rain, layout by the pool or relax in the bath. Workout harder and longer with your own uninterrupted soundtrack, rinse them off after the baby drools on them or just kick back. These are headphones that can keep up with whatever life throws at you, so go ahead, get 'em wet!

H2O Audio
Waterproof Sport Headphones
Comparisons Chart
Surge Pro Mini Waterproof Sport Headphones
Surge Pro Mini
Waterproof Sport Headphones
Surge Contact 2G Waterproof Sport Headset
Surge Contact 2G
Waterproof Sport Headset
Surge 2G Waterproof Sport Headphones
Surge 2G
Waterproof Sport Headphones
Surge Sportwrap 2G Waterproof Sport Headphones
Surge Sportwrap 2G
Waterproof Sport Headphones
Trax Waterproof Sweatproof Custom Fit Headphones
Trax Waterproof Sweatproof Custom Fit Headphones
Surge Sportwrap 2G Waterproof Sport Headphones
Flex All Sport
Waterproof Headphones
Distinguishing FeatureBalanced Armature Drivers
for Accurate Sound &
Compact Size for a better fit
Aerodynamic Design with
in-line Waterproof Microphone
& one-touch answer/end button
Aerodynamic Design with
Dynamic Drivers for
Powerful Sound & Deep Bass
Aerodynamic Designed Earbuds
with Neckband &
Coiled Cable for Stable Fit
Unique Moldable Memory Ear Hooks for a Stay-Put FitColorful, Affordable and
100% Waterproof
Waterproof Depth Rating12ft for an
Unlimited Amount of Time
12ft for an
Unlimited Amount of Time
12ft for an
Unlimited Amount of Time
12ft for an
Unlimited Amount of Time
3ft for 30mins3ft for 30mins
Headphone TypeIn-EarIn-Ear With inline
Waterproof Microphone
In-EarIn-Ear with NeckbandAngled In-EarIn-Ear
Recommended SportsSurf, Swim, RunSurf, Swim, RunSurf, Swim, RunSurf, Swim, RunSurf, Swim, RunSurf, Swim, Run
Earplug Styles/Sizes5 Elastomer (XS-XL),
2 Foam (S/M & M/L)
5 Elastomer (XS-XL)5 Elastomer (XS-XL)5 Elastomer (XS-XL)5 Earplugs:
3 Soft Round S-L,
1 Set M/L Soft Memory Foam,
1 Set Small Tree Tip
3 Elastomer (SM, MD & LG)
ColorGray and BlackBlack and BlueBlack and BlueBlack and BlueBlack and Cyan Neon Green and Dark GrayBlack and Gray Blue and Red Blue and Red Blue and Red
Driver TypeBalanced ArmatureDynamicDynamicDynamicDynamicDynamic
Driver Size6mm8mm8mm8mm9mm9mm
Frequency Response18-20,000Hz18-20,000Hz18-20,000Hz18-20,000Hz20-20,000Hz20-20,000Hz
Impedance56Ω16Ω16Ω16Ω16Ω16Ω
Max Input Power5Mw5Mw5Mw5Mw5Mw5Mw
Cable Length3.9ft3.9ft3.9ft2ft Coiled3.9ft3.9ft
Headphone Plug Type3.5mm Gold Plated3.5mm Gold Plated3.5mm Gold Plated3.5mm Gold Plated3.5mm Gold Plated3.5mm Gold Plated
Warranty1 Year Warranty1 Year Warranty1 Year Warranty1 Year Warranty1 Year Warranty1 Year Warranty
CompatibilityH2O Audio Waterproof Armbands
H2O Audio Waterproof Cases
Standard 3.5mm Headphone Jacks

Product Description

Don't let sweat or moisture corrode your headphones--go waterproof. Powered by H2O Audio's patented waterproof technology, the Flex All-Sport Waterproof headphones are built to withstand heavy perspiration and submersion up to 3ft/1m underwater for up to 30 minutes, making them perfect for athletes in all sports. Three different sizes of Elastomer ear plugs make it easy to find the stay-put fit that's best for you. Better fit also means better noise isolation for quality sound in the water or out. Best of all, they simply rinse clean for easy maintenance.

Customer Questions & Answers

Customer Reviews

I have over really nice ear buds for non water use.
R. Kevin Sparkman
After about a month of use at the gym and in daily life, one ear stopped working.
Betty Rumble
Sound quality is good (not great - but hey, I am underwater).
Stacy

Most Helpful Customer Reviews

2 of 2 people found the following review helpful By Ross Kirtley on May 31, 2013
Color Name: Onyx Black Verified Purchase
I've had these for approx 1 month and the jack connection with the wire has failed and its stopped working...
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2 of 2 people found the following review helpful By Marigold on April 21, 2013
Color Name: Power Pink Verified Purchase
I was happy with these headphones at first. Sound quality was better than a previous pair of waterproof headphones that I owned. But one earbud stopped working after only two months. :(
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1 of 1 people found the following review helpful By R. Kevin Sparkman on August 10, 2013
Color Name: Onyx Black Verified Purchase
I have used these under water and it sounds good. I have over really nice ear buds for non water use.
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1 of 1 people found the following review helpful By Stacy on March 26, 2013
Color Name: Envy Green Verified Purchase
There are not many choices for headphones you can swim in. These work well. Sound quality is good (not great - but hey, I am underwater). Earbud choices helped me fine the best fit.
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1 of 1 people found the following review helpful By Carol Mischel on January 17, 2013
Color Name: Onyx Black Verified Purchase
I bought the waterproof ipod shuffle and purchased these headphones to go with it because the headphones that came with my ipod did not get a good rating. Although the cord is very long and could be annoying, it was easy enough to just to wind up and tie the excess with the twisty tie they came with and stuff the extra underneath one of the straps of my goggles with the ipod attached to the other strap. I can swim continuously with no problems. The cords stay put and the earphones stay in. The earphones came with 3 different size ear plugs so you can attach the ones that fit best. My recommendation is to get your ears wet first before placing them in. Once the ears are wet and the plugs go in, it seems to form a very nice suction. The sound quality is fabulous. I have absolutely no complaints and it something ever happens to my earbuds and I will be looking to purchase these again.
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Color Name: Power Pink
I am a triathlete and I have been known to be very hard on my equipment. These headphones are the only ones that seem to tolerate my beating and I have gone through many types of earphones. You get three sets of earbuds so fit is not a problem. The cord is quite long but I find that helpful. I wear shorts with big pockets when I run so I am able to put my phone in my pockets and the ear buds reach easily with just enough slack. If you need a shorter cord they tolerate winding I have had my ear phones for 10 months and have not had any problems. I use my earbuds 4-5x a week. It gets quite hot in San Diego so I cool down with water over my head and body while racing. I tend to sweat a little more than the average gal and these earbuds have tolerated it all.
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Color Name: Super Hero Blue Verified Purchase
I used them once with my lifeproof and they wouldn't stay in when I went into the water. The sound would occasionally mess up, and within a week the right ear bud has stopped working
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Color Name: Onyx Black Verified Purchase
Leaked. Did not fit my ears. Returned
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