Super light, powerful, and convenient. Batfree has built-in batteries to wirelessly juice your Apple watch while on-the-go.
![Batfree, World's First Power Strap for Apple Watch](https://cdn-ak-scissors.b.st-hatena.com/image/square/40be76c1c534e8a37fc935600135dab10da0196d/height=288;version=1;width=512/https%3A%2F%2Fksr-ugc.imgix.net%2Fassets%2F024%2F758%2F613%2F28bbda5fd73a93c92bab13edf439ba0e_original.png%3Fixlib%3Drb-4.0.2%26crop%3Dfaces%26w%3D1552%26h%3D873%26fit%3Dcrop%26v%3D1555167230%26auto%3Dformat%26frame%3D1%26q%3D92%26s%3Df23a5dcca0df25ecb6013a14407b5f13)
The watch-size subwoofer. Delivers bass directly to your body – for a powerful music experience that headphones alone cannot provide.
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