1MORE iBFree in-Ear Earphones Wireless Sport Headphones Bluetooth CSR, IPX 4 Waterproof, Secure Fit in-Line Remote Gym Running Workout - Space Gray CD-like wireless audio quality with CSR Bluetooth chip, aptX codec and PET + aerospace-level titanium diaphragm inside a dynamic driver. Bluetooth V4.1 for fast connection with no signal loss; 32 feet of wireless range with 8 hours of playback and 240 hours of standby. 14 g only with ergonomically inclined angle; extra ear tips and sport grips for optimal comfort and secure fit, never falling off. IPX 4 waterproof keeps the earphones fully functional even when you exercise in light rain. Sweat wont stop your music. Control volume and playback, take calls and charge up earphones from the in-line box; 4 color options match your workout clothes.