Product Parameter 1.Bluetooth Version: Bluetooth V5.0 2.ChipAC6951C 3.Battery3.7V/500mAh 602535 (UN38.3 4.Using Time:Listen to music for about 10 hours and stand by for 30 days 5.Transmission Range: 10m (barrier free) 6.Interface: 3.5mm AUX/2RCA/COAXIAL/OPTICAL 7.Input Parameter:DC 5V-2.1A(MAX) 8.Support Protocol: A2DP/AVRCP 9.Using Method:Drive free 10.Basic Functions: Bluetooth reception, Bluetooth launch, U-disk playback, tfcard playback, infrared remote control, key operation, digital fiber / coaxial input, NFC 11.Support Devices:All kinds of speakersdesktop computer laptop TV power amplifierprojector Product Features: 1.NFC digital display multifunctional smart bluetooth audio Receiver and Transmitter 2.High-definition LED digital display, Bluetooth mode and working status are clearly visible 3.Bluetooth 5.0 chip, dual-channel stereo, zero transmission delay, support various devices 4.500mAh lithium battery, standby for about 30 days, listening to music for about 8 hours 5.U-disk/SD card/digital optical/coaxial/RCA/AUX/Type-C and other interfaces are all available 6.Upgrade the NFC mobile phone connection function, the mobile phone touches and connects 7.Receiving mode, mobile phone connected to speakers, convenient for listening to music wirelessly 8.Transmitting mode, the computer upgrades the Bluetooth function, connects the headset to watch TV 9.TV mode supports digital optical/coaxial/RCA/AUX signal in-line input 10.Support 5-8 meters infrared remote control, each operation is simple and convenient 11.Receiver Mode For Wired Speaker/Home Speaker/Power amplifier/Headphone/Car kit 12.Transmitter Mode For TV/PC/Projector/Power amplifier 13.With HD Mic Handsfree Calling 14.Support Music Format:WAV/FLAC/MP3/APE/MAV Packing List: 1x M8 Bluetooth Audio Adapter 1x 3.5MM cable 1X 3.5mm-RCA cable 1x Type-C Charging cable 1x Remote Control 1x User manual 1x Retail Package About Us: Dear customers,we are professional manufacturer that produce Bluetooth devices like Bluetooth adapters,Bluetooth earphones and Bluetooth speakers.We will test all the products before we send the products out,which make sure that you will receive the perfect products.