1. Bluetooth version: V5.0 (JL ) 2. Transmission power : Class2 3. Wireless frequency : 2.4-2.48GHz 4. Transmission distance : 10 meters 5. Charging time: 1 hour (charging voltage: 5V) 6.Talking/listening time: 6-7 hours 7. Supports high quality music stereo playback 8. distance: 10MM 9. Applicable to all mobile phones with bluetooth function 10. Charging box :300 mah 11.Earphone battery 40 mah