1.Bluetooth chip/Version:JL AD6976D V5.0+EDR
2.Bluetooth protocol:
1)HSP1. 2)HFP1.6, A2DP1 3) AVRCP1.5
3.radio frequency /RF:Meet class1 class2 and class3 transmitting
4.Receiving sensitivity:-94Db
5.Transmission frequency: 2.402-2.48GHz
6.Transmit distance(barrier-free):10 meters
7.RF power /RF grade: Meet class1 class2 and class3 transmitting
8.Standby time(connected status):50 hours
9. Working hours:6 hours (depends on the volume)
10. Battery:
1)Charge times for storage charge box:2-3 times
2) Battery Type: Lithium-ion polymer battery
3)Earbud battery capacity:3.7V 45mAh with protective board
4)Battery volume for Storage charge case: 3.7V 400mAh with protective board
5) Earbud battery charge time:1-2 hours
6) Storage case charge time:1-2 hours
11. Speaker
impedance:32±10％ at 1000Hz , 6mm
Rated power:3W
maximum power:5mW
frequency response:20Hz－20KHz
THD:5 % 1000Hz
DB value of left and right ears:Within 3db