Behind-Ear Design: Lightweight Bluetooth Earbuds with a few adjustment on the ears, Behind-Ear Streamline Flexible Soft Texture Design ensure 100% Comfortable and Stay on ears,Bluetooth Wireless Headphones perfect fit for running/cycling/workout/gym
Single Button Operation: One-Button design make wireless earbuds simple to control music and calls. It has an play/pause/answer/hangup button and a multifunction button. The multifunction button cycles through all the volume levels with one button
Battery Endurance: Built-in 150mAh lithium-ion polymer battery, up to 320 hrs of stand-by,up to 10 hrs of talking / music time. Bluetooth Sports Headphones can connect 2 mobile at the same time with 10-meter working distance
Perfect Hi-fi Sound: Headphones built-in HD Mic with CVC6.0 noise cancellation, ensure wireless headphones has really nice bass and a good overall tone. Bluetooth Earphones sound is crystal clear with no hissing during noisy environment like running
Advanced Technology: Bluetooth Headset Adopt Latest Bluetooth V4.1 compatible with 99% bluetooth devices,like iPhone 6S 6S Plus, Sumsang Phones and Android phones. Easy and fast pairing. COULAX Bluetooth Wireless Headset provide 12-month Worry-Free warranty