Otium Wireless Bluetooth Headphones STATE OF THE ART EARPHONES DESIGN. Best workout sweatproof bluetooth ear buds. Great for Running, Jogging, Hiking, Biking, Gym etc. Stay in Ear Tech with Comfortable Ear Hook. Neckband design, no wires tangling, and it's easy to storage to your sports armband or arm package bag. SUPERB SOUND Quality headset and Bluetooth V4.1+EDR for stereo sound and superb bass sound. Clear high & low volume. Best wireless earbuds sound.Bulit-in mic with voice notification of incoming calls UP TO 8 HOURS Music playing for full battery charge. Super quick charge time with full charge light indication.The headphone battery status will be automatically displayed on the IOS Phone screen.