Bluetooth specification: Bluetooth4.2
Support bluetooth protocol:
L2CAP/A2DP/AVRCP is supported for receiving stereo audio signals, and the up-down operation of audio transmitter can be controlled by the protocol.
Support HSP/HFP(Handsfree profile), with hands-free function, can conduct voice communication
Wireless transmission range: 10M
Audio noise ratio: greater than or equal to 90db
Battery capacity: 400mAh
Built-in voltage: 3.7v
Normal volume: 2H
The speaker specification: 52 mm * 1 ￠   
The speaker power: 4 Ω / 5 w * 1
Frequency response: 120hz-20khz
Size: 70 * 70.4 * 70.4 mm
Single machine weight: 220g(single machine)
Charging voltage: 5V/500mA
Charging time: 2-3h
Rules: 46.2 * 40.7 * 35 cm
Color: black, red, blue, green, pink, yellow, silver, brown