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Am a clumsy guy - swimming is best workout for me - up to 80+ laps a session - this single unit -,as,opposed,to the dual ear pods - works best for me - fits under my cap - hope it works for you - find your nirvana
This review is from Sony - Smart B-Trainer Activity Tracker + Heart Rate - Black
Posted by CMunki
Great product. They work as advertised and intended. However, the ear cushions are poorly designed and come off easily leaving it susceptible to water damage. The sound amplification could also be better.
This review is from Sony - Smart B-Trainer Activity Tracker + Heart Rate - White
Posted by Jd2683
Interesting product. MP3 player and fitness tracker also bluetooth headphone... AND waterproof. A little confusing with them 8 buttons, but got used to it. Fits decent, though not everyone will feel the same. Most importantly... if you don't update its firmware (much like updating iOS for your iPhone), it doesn't work properly... it's annoying because I had to google how to do it. You have to go on Sony's website to do it btw.
This review is from Sony - Smart B-Trainer Activity Tracker + Heart Rate - Pink
Posted by ANDLMKY