JDEX-TX10 Wireless 2-in-1 3.5mm Bluetooth 4.2 Audio Receiver And Transmitter Adapter Product color: black rubber oil Product channel: stereo Interface type: 3.5mm Bluetooth version: bluetooth 4.2 Features: the receiver can connect to 3.5mm ordinary earphone, ordinary speaker and car speaker headphone The transmitter is inserted into the audio port of TV, computer and mobile phone through a 3.5mm adapter to transmit signals, which can be connected to the bluetooth headphone bluetooth speaker for use. Bare weight: 16g (bluetooth transmitter and receiver) Total product weight: 60g(bluetooth transmitter and receiver + wiring + charging cable + instruction manual + box packaging) Packing: box Battery capacity: 200 mah Package size: 9.2*8.8*2cm Packing list: 100 PCScarton Pairing timeout shutdown: shutdown after a pairing state lasts 5 minutes Low voltage reminder: when the voltage is less than 3.2v, it will be reminded once every 5 seconds, and 3.1v power off System status: Power on and off: long press the power button for 3-5 seconds Volume plus: long press + Volume reduction: long press - sign Receiver music control: Pause: press the power button Previous track: - button Next track: + sign tap Receiver: stereo, Transmitter: unilateral track Led light display: Power on pairing: red and blue lights flash alternately Connection status: blue light flashes slowly