Sound head outer diameter: high-sensitivity moving coil sound head
Sound head Type: Cardioid unidirectional
Sensitivity: -54±2dB
Frequency response: 50Hz-16.50Hz
Output Power: 7W Speaker + Bass Diaphragm
Power supply mode: Built-in Lithium Ion Battery
Battery Capacity: 2000mAh Large Capacity Lithium Battery
Charging Specifications: DC 5V/Max/0.8A-1A
Charging Time: about4-5hrs from zero to full ( according to the actual test time)
Theoretical Working Time: 4-6h
Bluetooth Version: v5.0
Warranty Period: within 1 Year
Accessories 1 Manual, 1 Charging Line, 1 Audio Line