Type: Bluetooth Audio Receiver
Material: ABS
Quantity: 1
Item color: black
Bluetooth version: 4.1
Frequency range: 2.4GHz
Built-in 90 mA battery
Transmission distance: up to 10 meters / 33 feet
I / O 3.5mm female plug, Mini USB female mouth
Power Supply: DC 5V
Charging time: about 30 minutes
Working time: about 4 hours