Product information:
Bluetooth version: 5.2
Supported protocols: HSP/HFP/A2DP/AVRCP
Charging interface: Type-C
Input current: DC 5V
Output current: 3.7V/50mAh
Horn: 13mm high quality moving coil
Frequency response range: 20Hz-20000Hz
Headphone battery: 30mAh *2
Charging box battery capacity: polymer 200mAh with protective plate
Music playback: , about 6 hours of single playback, about 22 hours with charging box
Talk time: 5-6 hours
Charging time: 60 minutes
Wireless working range: ≤15M (no obstacles)
Size Information: 
Packing list:
Headphones*2
Charging box*1
Type-C cable*1
Manual*1
Packaging*1
