1. Charging voltage: 5V
2. Working current: 35mA
3. Charging time: about 40 minutes
4. Working time: about 5.5H
5. Battery capacity: 200mAh
6. Bluetooth version: Version5.0
7. Bluetooth sound processing: with A2DP (Advance Audio Distribution Profile) function
8. Bluetooth frequency: 2.402-2.480GHz
9. Bluetooth transmission distance: barrier-free about 10M
10. Effective distance of Bluetooth microphone: about 0.5-2M
11. Bluetooth transmit output power: 6dbm
12. Material: ABS
13. Weight: about 16g
14. Size: about 5.5x3.4x1.3cm

Features:
1. Bluetooth V5.0
2. Clear all paired Bluetooth information
3. Automatically reconnect to the paired Bluetooth device when powered on
4. 10 minutes without device connection, automatic shutdown
5. The music playback time is about 5.5 hours when fully charged
6. Bluetooth supports A2DP, AVRCP, HFP, HSP
7. Support Bluetooth stereo music DSP technology
8. AUX audio output
9. Voice broadcast caller number
10. Private answer