Okeyn Bluetooth 4.1 Wireless Sport Headphones Qy7 Sweatproof Running Gym Exercise Bluetooth Stereo Earbuds Earphones With High-fidelity Stereo Sound Car Hands-free Calling Headsets for iPhone 6 6 plus 5S 4S Galaxy S6 S5 and Other iOS android Smartphones (Light Green) Strong Wireless Signal-- Newest Bluetooth 4.1 version, Strong signal is 2 times than normal version to enjoy the perfect sound quality and calling experience. Exercise-proof and Sweatproof design--Stable and Comfortable when exercising, running, climbing, driving, skating, camping, fishing and doing other outdoor sports. Long battery life: Built-in high performance polymer 80mAh battery, 5 hours talking/playing time, and about 175 hours standby time. Unbelievable sound quality-- noise-isolating design ,top-notch speakers and the ultimate in Bluetooth connectivity work together to create a memorable listening experience. Easy to usecompatible with most Bluetooth devices, pairing up takes just a matter of seconds. The simple user interface on one of the earphones allows you to adjust the volume, pause, select songs and pick up calls completely effortlessly.