Item Name: Bluetooth Microphone
Material: Aluminium Alloy
Bluetooth Version: 4.2
Charging Voltage: DC 5V
Charging Time: 3-4 hours
Sing Time: Up to 4.5-9 hours
Battery Capacity: 3.7V 2000mAh (Include)
Transmission Distance: 17m
Maximum Sound Pressure Level: >115db, 1KHz