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I bought this case because I got sick of my long open water swims. They got boring. This case fixed that up quickly. The headphones fit great with no leaking. I have also been using it on runs by clipping it to either my hat straps or visor. Love it because there are no cords to mess with and no fumbling around if you want to change the song or turn it up. LOVE THIS THING!!! (Posted on 12/13/12)

I never knew what I was missing until I used this product! The Interval is for all those people that use their iPods for running, only once you listen to your music in the pool, swimming is like a whole new sport. This is a really simple product to use. I read one negative review about it leaking. But that person just wasn't paying attention. Simply open up the Interval's waterproof case, plug in your iPod, and make sure the iPod sits in the slot in the back of the case. I close the case by pushing evenly on both tabs on the outer edges and in using it 4 times a week for the past month I haven't seen a drop of water inside the unit! It's definitely waterproof. The headphones surprisingly stay in place regardless of your pace. If I have to adjust them more than once per workout I'd be surprised. I adjust my goggles more than that! Sound quality is really good considering you're under water. It's just a great product that I would recommend to anyone tired of staring at the black line day after day. Buy it, you won't be disappointed! (Posted on 12/11/12)

I dont really get into writing reviews for things, but tried the Interval 4G for the first time this morning, and WOW! I wasn't sure what to expect, maybe tinny sound, and the feeling that any music would be better than nothing, but these sound crystal clear w/ a rich deep base. I have only used it once, so for all i know, it will start leaking in a couple of weeks, but the feeling of using an IPOD while swimming has to be experienced. If this thing holds up as expected, it will be one of the best things I've bought (for the price) in years! I swam an extra 20 laps just because of digging it so much. Fits great, easy to attach to goggles, and simple to use controls. Could not be happier. If you swim, BUY THIS! (Posted on 10/29/12)

i use my interval about 3 times a week. in the pool - it fits my google great. i usually wrap the ear bud cables around the goggle strap a few times just to shorten them up (this is my only complaint). sound is great. occasionally i have to suck out the seal on the earbuds. running: this fits nicely on my h2oaudio visor. the ear buds stick and never fall out. it feels a bit heavy on the back of your head at first, but you get used to it after a few runs. would highly recommend. (Posted on 10/9/12)

I just brought this two weeks ago. This stuff is so sick!! I went to swimming yesterday with this and man I was swimming for a long time with my favorite songs! I am in love with H2O audio! I recommend you also buy the pro kit with different ear sizes. This is awesome! I'm taking this with me to college this fall and I am going to exercise and swim everyday with a smile on my face! (Posted on 7/27/12)

This is something every swimmer or Triathlete needs. In fact anyone who works out in a pool should have this. It completely protects my Ipod shuffle without any worries in my head. Sound is amazing underwater. It really helps me get through the mindless amounts of laps. Find the right earbud size and your good to go. Took me a few tries to get it right. Also finding the right type of goggles to fit the Interval 4g for the optimal comfort is something else I recommend. Best $100 i've ever spent. (Posted on 3/30/12)

I've always had waterproof MP3 players, but never used them for more than 5 times because the earphones fell off, the design wasn't friendly, and it was just too cumbersome to take care of this one + ipod+ iphone.
H2O Audio has the perfect solution: the casing protects my ipod shuffle 100% from the water, and the earphones stick to the ear and never fall off!

I am very happy with my gear and CANNOT imagine myself swimming without it! (Posted on 3/14/12)

I LOVE the H2O Audio Interval system because when I am Running Biking or Swimming, I am able to train harder by listening to this music! It is so impressive to me that I am able to listen to music and know that none of my sweat or water coming off my body will ruin my ipod! THANK YOU H2O Audio for creating this super helpful ipod protector!!! (Posted on 3/6/12)

OMG I LOVE this thing! Sound quality is amazing and the headphones double as earplugs, so I no longer have to use drops to get the water out of my ears after a long swim. I've never had good luck with earbuds staying in my ears, and these are no different, but I just put my swim cap over my ears and they don't budge. Makes long swims SO much better. I constantly get comments at the pool about this case and I reccommend it to everyone! (Posted on 2/28/12)

I already had an H2O Audio product for an older ipod....but, after a few years, the headphones gave out on one side. Of course, it being older, replacement was obsolete. I wasn't too upset about having to buy new since I really liked my older version.
Two things I don't like about this version:
1: Only being able to attach the case to my goggles. With shoulder injuries, I now kick a major portion of my swim work out. I don't wear goggles when I kick. Was hoping to be able to attach the case to a strap of my swimsuit, but, the headphone cords are too short for that. So, I attach to my goggles and push the goggles up on my forehead. Not my favorite solution tho as it leaves marks for hours afterwards.
2: No matter what I do, I just cannot get the earbuds to fit. I am on the x-small and they still fall out. I have to pull my cap down over them (which I HATE!) and even that isn't a good solution as they still tend to shift. I waste a lot of work out time messing with the earbuds.

How about trying a different earbud design? Don't know about copyright infringements, but, the new Bose design is wonderful! Something similar would certainly be better than the current design.

Overall, a good product. I just don't think this version is working for me. Would definitely buy a re-designed version though if I thought it would work out better for me. (Posted on 2/22/12)

Never had such a good swim in my life. I'm so use to the silence under water and now the Interval 4G Waterproof Headphone System for iPod shuffle. Gives me a whole new way to train with music. (Posted on 2/21/12)

Wow, just tried for the first time today.... These really allow me to focus and keep the workout fluid and effortless! Luv my playlist ! Wish I'd had these last year...really looking forward to lake swims this tri season!! No complaints, everything fits well. Thanks!
Will highly recommend to all my swim pals! (Posted on 1/29/12)

As a triathlete I spend a lot of time training for my swim. After getting this system, I swim my laps without noticing I have finished since I spend my whole time singing along forgetting what I am actually doing at the time, swimming laps. I love this so much I bought them as presents for all my friends that swim for christmas last year. They too now never enter the water without them.

(Posted on 1/16/12)

I bought my Interval 4G yesterday, used it for the first time this morning and did not want to get out of the pool even after doing 50 laps instead of my 40 laps routine. Yeeeeeeehaaaaaaaa !!! I gave it 5 stars for first time use with no problem. I had the small earbud in the left ear and the mid size in the right.

Is it normal to hear the sound of the water splash when diving your hand into the water ? Not sure how long the earbuds will last due to chlorine water in the pool (?) also the door latch seems too delicate for repetitive use (?). I just hope this is a quality product and it will justify my investment ($99.99 not cheap). Time will tell... For now i'm a very happy swimmer !!!! (Posted on 1/5/12)

For a long time we fantasized about having music in the pool like the road, and now it is possible! The Interval is water tight, so the ipod is safe. The unit stays in place and is virtually forgotten while swimming. The buttons opertate the ipod effectively and efficiently. Chasing the bue line just got a little more enjoyable (Posted on 12/9/11)

love it! Easy to operate. Attaches well to goggles. Swim cap helps to keep earphones in place and improves ability to hear sound. I now swim double to triple the time I use to. I prefer 3rd generation clip only because I could also easily Attach to hairband and baseball cap. (Posted on 12/5/11)

I love this product. Easy to use and great sound while swimming. Ear bugs stay in place are are very comfortable. (Posted on 11/21/11)

The fit is comfortable over my swim cap and I put the ear buds in before pulling the cap down over my ears. The earphones have worked well. I agree with others that if the ear buds are not in properly, the sound will be spotty. It doesn't seem to be a problem with the ear bud function, but more with how they fit in my ears. I found water inside my case once because I didn't close the latch tightly. Overall great product, I am coming back to buy another one as a gift. (Posted on 11/21/11)

I wrote a review of the H20 Audio Interval for my Bike Diva blog: http://www.bikediva.net/2011/10/h2o-audio-swim-with-music.html.

Great product, I use it to listen to music while swimming laps and I also purchased the run hat so I could use the Interval to listen to music while doing my longer runs. (Posted on 11/10/11)

I am happy with the H2O ,but if you get one you have to give it time. getting the right fit is something that I still have problems with. even if they fit at first in the water does not mean they are going to fit while you swim. The ear plugs are hard to set up and you have to swim and get use to it. Fit in the ear before gettting in water and swim. I went from the x large tot he small and now i think I have found a fit. Also I use the interval for running and it works great. Only problem there is that you can not use it with all hats. The earplugs can be a little bit more durable and you have to be careful fitting them. If you are buying this product you will be happy with it but take your time in the first months of use and watch for water inside the case. (Posted on 10/10/11)

I purchased this system because I swim for a long period of time and it is hard to keep entertained. After reading the reviews I decided to give it a try and I am thrilled with my purchase. First time in I had a little difficulty with the R earphone so I lost the sound from that side, but second use I was able to get a snug fit and had music for the whole 90minutes! It was great. I would definitely recommend this product. (Posted on 10/7/11)

I originally purchased the Amphibx armband and Surge Sportwrap 2G headphone combo for my iPod shuffle and this setup worked for my daily 50-lap swimming workout... for about 2 weeks. Inevitably the structure of wiring on the Sportwrap 2G headphones would cause the wires to get pulled and short with repeated head turning when I take a breath. I replaced the Sportwrap headphones at least 3x and had the same result - I could no longer hear the music clearly. I was frustrated!

Enter the Interval 4G set. SO. MUCH. BETTER. Just based on the fact that the whole unit is on your head and there are no wires to pull and short when your head turns. I love this unit and my love for swimming and listening to music has been saved. This is a far better alternative for lap swimming than my first outing with H2OAudio, and I recommend the Interval 4G highly. The only challenge, as it is with many headphones, is to find the right earbud to stay in my ear. Just get the ProFit kit and problem solved. (Posted on 9/30/11)

I have had my Interval 4G for a couple of weeks now and so far I love it. My wife and I each use our own shuffle so we have our own music to swim to. I owned 2 SwiMP3's before the Interval and like the Interval 4G much better. I swim in an Endless Pool and the 4G really relieves boredom and lets me work out much longer and harder. My wife and I use the same ear pods with no problems. (Posted on 9/12/11)

My dog as eaten the ear plug of my first geneneration h20. I buy this new one and i think is better than the oldest. I swim 2000 yards twice or three a week in Harlem pool Marcus Carvey park, it's like a dream, and for relax at the end of my sport it's very cool. (Posted on 8/11/11)

Used the device for a month now and so far so good, easy to setup and easy to maintain. Needed to use a smaller ear bud to have it seat nice and comfortably. (Posted on 7/14/11)

I originally bought the Interval for the 2G shuffle and was severely disappointed. The latch on the case broke after 2 months of use. I received a replacement and it happened again. I thought it sounded very good but was very annoyed that the case latch kept breaking. The 4G Interval is a BIG improvement on the 2G design. The headsets have a better bass frequency this time around in my opinion and the case design is much more sturdy than before. It still takes a little getting used to as far as adjusting how the ear buds should sit in your ears to get good sound but once you find it, you are golden. I am very happy and satisfied with the Interval so far. Much much better than the 2G version. (Posted on 6/19/11)

It's pretty awesome to be able to listen to music while I swim - never thought I'd be able to do that. As far as the comfort of having the Interval sitting on the back of my head while I swim, I honestly never even notice it. After I put it on, I forget it's even there.

My only problem is the ear buds. I can't seem to find a size or a shape that works for me. I even sprung the extra $20 to purchase the "assortment" of ear buds to try, but I still can't get them to work very well. I usually swim between 2,000 - 4,000 yards in my workouts for about an hour. It never fails, the ear buds work fine for approximately the first half of my workout, then they let water in, and it's hard for me to hear the music for the rest of my workout. I've read all the tips to getting a good fit, and I still can't get them to fit right.

Other than that, it's a pretty cool product. I know for a fact since I bought mine, there's been at least one other person who purchased one, after seeing mine and asking me where I got it. (Posted on 6/6/11)

I recently upgraded from the inverval 2G to the recent 4G. I find the new 4G case not nearly as comfortable in the way it touches the back of my head ... I find it really hard to get in a comfortable position. The earphones so far are very good, except for the sound getting very soft in one ear on 2 of my 10 swims. Even with those issues, I can't imagine not swimming with my interval. (Posted on 4/8/11)

I was happy to receive my Interval 4G and find it to be working very well. Moving easily from goggles to hat is a plus.

I would have bought other products from H2O Audio over the past couple of years, but shipping options provided by H2O Audio to Canada are very limited and costly. Belive it or not USPS does ship Internationally for reasonable price. Even if you were to only offer a FedEx service at least offer International Priority, as economy ends up costing the same when you have to come up with a $25 brokerage charge at the door.

Shipping should never cost more than 50% of the purchase price...


- - Scooter - -
We're always looking into ways to make getting our products around the world easier, so thanks for the suggestion. But it's also worth noting that there are tariffs and other charges aside from just the cost of shipping alone, so those can vary greatly by country and are often out of our hands. Also, we are in stores in Canada and are working to expand those locations as well if you want to avoid shipping costs.

~Dana
H2O Audio (Posted on 4/6/11)

seriously music is the part of my life.
while swimming i able to enjoy the songs. (Posted on 4/6/11)

I had the 3rd generation shuffle and case, both of which stopped working. When I got a new shuffle for christmas I was thrilled, but disappointed to find out there was no waterproof case. I swim all the time and having music is amazing. So I am absolutely ecstatic that this case is finally out. It works great. Thanks H2OAudio. (Posted on 4/5/11)

I have tried many radios to solve the boredom problem while swimming laps. None worked. Finally, I tried the IPOD shuffle with the Interval 4G case and, at last, after 40 years, I can enjoy my two favorite things-swimming and listening to music. Thank you. H2O! (Posted on 3/30/11)

its the best (Posted on 3/19/11)

This is a vast improvement from the 2G shuffle unit. The new Surge headset is louder than the previous version and has much better bass. Previous complaints from other users were that the ear buds keep falling out. I've had no such problems. As a matter of fact, my ear canals were completely dry after swimming 1500 yds with a 200 yd IM. Perhaps my ears are such that the unit fits like a glove?

My main complaint with the 2G Shuffle Interval was that the plastic latch broke after 2 months use. I thought it was a fluke so I returned it for another. The latch broke again. It seemed the plastic was brittle. I gave it a third chance and the latch lasted 2 and a half months before breaking. I gave up and received my refund.

Hopefully, this version is much more durable. I want to be a fan of the Interval because it really is a great system. Time will tell if it holds up. For that, I give 3 stars. I'll upgrade to 4 or 5 in two months if it lasts.


- - WannaBAFan - -
We would love to hear your few month update! We did make improvements to this case to make the latch more durable, as well as other updates for performance and durability.

~Dana
H2O Audio
(Posted on 3/18/11)