1.Bluetooth chip/Version:JL6936D low comsumption V5.0+EDR
2.Bluetooth protocol：
1)HSP1. 2)HFP1.6, A2DP1 3) AVRCP1.5
3.Power Input: 3.2V-4.2V
4.Output: 30mW
5.Load : 32Ω /φ8
6.Power rating: 74mW
7.Earbud battery：45mAH(one-side),protective polymer battery
8.Charging box battery：450mAH，protective polymer battery
9.Charging power：earbud:5V/40mA，charging box: 5V/300mA
10.Transmit range：15 meters
11.Frequency：2.4GHz-2.48GHz
12.Talking time：around 5 hours
13.Listening music time：around 4 hours
14.Standby time：around 360hours
15.Weight: single earbud: 4g；charging box: 43g
16. Charge box can charge 3.5 times for eabuds
17.Earbud charging time: around 1 hour
18.Waterproof level: IPX4