FineBlue P20 Wireless Headphones Bluetooth Earphone Sport Running Wireless Stereo Bluetooth headphone Headset with mic sport new (Black) 1: In-ear design for sports and leisure without dropping. 2: Designed for sports, round and round contour design, about 30 oblique angle into the ear, soft fins, deep fit to the ear canal, it is stable and comfortable, easy to move. 3: One for two smart connections, you can connect two Bluetooth devices at the same time. 4: Full of energy, 6 hours of casual listening, 80MAH rechargeable polymer lithium battery. 5:10MM Although the magnetic unit, composite diaphragm, bass guide hole, bring a thick bass, clear mid-range, high-frequency green bright tone, strong explosive power.