Hello and welcome to our store. We hope our service can satisfy you and wish you have a pleasant shopping experience! Features: 1. Low consumption V5.0. 2. Turn on bluetooth to quickly connect to Apple or Android device, support a mobile phone, pads, notebooks and other devices and other devices with bluetooth. 3. Master-slave switch: one earphone is not carrying case, the other can continue a songs. 4. The headset is placed in the charging and charging bay automatically for one hour of listening experience. 5. HIFI sound quality, super loud. Specifications: Bluetooth Version: 5.0 Earphone service time: 4 hours Long standby time: 480 hours Charging compartment battery capacity: 210 mAh Charging compartment charging times: 2 times Wireless Distance: 12m Package Included: 2* headphone + 1 * Transparent earphone protect case + 1 * Charging cable + 1 * User Manual