Bluetooth Headphones, Otium Wireless Sports Earphones w/ Mic IPX7 Waterproof HD Stereo Sweatproof In Ear Earbuds for Gym Running Workout 8 Hour Battery Noise Cancelling Headsets The wireless headphones adopts multiple precise metallic technologies, vacuum plating with stainless steel and mercerizing on the surface, it is also skip proof and scrape proof. Advanced Bluetooth 4.1 with CSR8645 offer a faster and more stable connection, powerful battery last up to 8 hours play time and talk time. The headphones through Bluetooth V4.1 with A2DP can connects with all Bluetooth enabled devices easily, and allows connecting 2 devices at the same time. The Knight series provide premium sound with deep bass, and support APT-X makes music as close as CD quality. CVC6.0 noise cancelling feature isolates you from noise. Best running headphones with water resistant shell enable IPX4 water proof protection. It has different ear buds sizes and an add hook so that it ensures the headphone will never fall out during running, workout, gym or other sports.