Bluetooth V4.1 easy pairing; Frequency:2.4GHz; Warranty: 1 years; 150mAh High Battery Capacity; 250H standby time; Up to 8.5H talking time; 2H Charging time.
Size L and S earcap available; Anti-slip adjustable big ear hook fits your ear types that no falling; Skin-alike silicone and ergonomic in-ear design which comfortable for ear canal.
Feature: A top-class 4.1 CSR technology, Apt-X support, Bluetooth chip, Perfect air chambers, Advanced CVC 6.0 Noise Cancellation and with 14.8mm inner big speaker; professional astonishing and fantastic Stereo sound;
Sweatproof, Rainproof for running, cycling, skating, Gym .ect
Work with 2 mobile phones simultaneously; Applied to iPhone, iPad, Android Smartphones, tablets, Windows devices, and all popular Bluetooth devices.