3D-Flex sport clips, Quick-fit adjuster and Canal design
The hook portion that wraps around the ear can be freely bent, providing a comfortable and optimal fit. Once you have set them to the shape of your ears, the 3D-Flex clips remember that shape and fit snugly on your ears, even during exercise. The BTS55 headphones have a perfect ear-fitting structure, so you can enjoy sports with your favourite music, no matter how intensely you move.
Sturdy design for sports use
With an IPX5 rating for water resistance and sweat proof structure, BTS55 headphones are a reliable partner during workouts.
No sweat or water can penetrate the headphones thanks to the shape of the USB cover, which has been designed to shut tightly without any gaps, and has a water-repellent coating on the internal structure.
BTS55 will keep the sound flowing come rain or sweat, while you focus on getting fit.
* Water resistance specifications are equivalent to IPX5 of IEC 60529.
* The bottle in the photo contains tap water.
Quick charge compatible
The BTS55 headphones can be used for up to 70 minutes after just 15 minutes of charging. Even if you forget to charge them, after a short wait they are ready to be used for an extended period. When fully charged, they provide up to 6 hours of playback.