Product specification :
Bluetooth version: V5. 0
Frequency range: 2, 402GHZ-2. 480GHZ
Power input port: Micro USB DC SV
Transmission distance: > 10 meters
Built-in battery: 250MA
Charging time;about 2 hours
Working hours: > 10 hours
Audio output: 3. 5MM audio output interface

OLED wireless audio receiver 1PCS
USB charging cable  1PCS
3. 5MM audio cable  1pcs
Neutral manual 1pcs
3. 5MM audio adapter  1pcs