1.BT chip / version: V5.0+EDR
2.Wireless frequency: 2.405GHZ-2.480GHZ
3.Power: AC 110-240V DC 5V
4.Support file formats: HFP HSP A2DP AVRCP
5.Transmission power: CLASS 2
6.Wireless distance: 10m
7.battery capacity: earphone 60mAh*2 / case 3000 mAh
8.Music Playback Time: 4 hours 9.Standby time:90 hours
