Cut the cords and unleash your inner athlete with the Focus Limited Edition Wireless Sport Earphones. These Stereo-Bluetooth earphones lock in place comfortably so they never hurt and never fall out. The 15mm drivers provide the biggest sound available, providing the motivation you need to #neverstop. These sweat and water resistant earphones feature full track & call control with a wind-blocking microphone designed for call clarity. The athlete tested battery lasts up to 6 hours and provides visual and audible indicators when running low. This is sound with no strings attached.