Product Overview
1. Bluetooth V5.0 chip, with faster transmission speed and longer transmission distance. 
2. Compact and lightweight, easy to carry. 
3. Earphones battery capacity: 3.7V/45mAh. 
6. Input voltage: 5V 
5. Charging time: 40-50 minutes 
6. Talking time: 2-3 hours 
7. Support protocol: HSP/HFP/A2DP/AVRCP 
8. Sensitivity: 120+/-5dB 
9. Frequency response: 20-20kHz 
10. Impedance: 32 ohms 
Package Include 
1. Wireless earphones(2pcs) x 1 
2. Charging case x 1 
3. Charging cable x 1 
4. Instruction x 1