• Support NFC connection/disconnection, move the NFC mobile phone close to the sensing area of the device without manually turning on Bluetooth
• Transmitting mode: transmit the audio to the Bluetooth-compatible headset or speaker by the adapter
• Receiving mode: receiving audio so that none-wireless speakers have Bluetooth-compatible function
• Support 3.5mm and 2RCA output at the same time, bring you surrounded sound

Specification:

• Model: M21
• Size: 6*6*2.2cm
• Material: ABS+PC
• Bluetooth-compatible: BT 5.0
• Working Distance: 10m
• Working power supply: DC5V (1-2.1A)
• Compatible: All Bluetooth-compatible audio devices, support A2DP/AVRCP/HFP protocol