Bluetooth Earphones Wireless Headphones Handsfree Business Headsets with Mic Drive Call Sports Earphone for SmartphonesV9 Features1.Bluetooth version: V5.02. Transmission power: Class23. Transmission frequency: 2.4GHz4. Transmission distance: more than 10 meters5. Talk time: 6-8 hours6.Standby time: 120 hours7. Support file format: A2DP music player, earphone and hands-free mode8 The charging jack is Android micro 5P USB flat head jack Features 1. Fashionable 2. Support all Bluetooth devices and mobile phones 3. Connect 2 mobile phones at the same time 4. A2DP, support music playback 5. Echo processing 6. Voice prompt function 12, answer the call, reject the call, call back at the last code a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a