1,Support NFC, built‑in chip, by touching this receiver can be directly connected with NFC mobile phone or other Bluetooth support NFC. 2,Bluetooth version 0, conforms to version 0 specifications, and is also compatible with Bluetooth 2 or 1 or 0 or 0 or 0 or 0. 3,With USB, 5mm and 2RCA connection options, you can enjoy music wirelessly on 2 speakers at the same time. 4,Support dual audio port connection, with 5mmAUX or 2RCA or USB audio port, suitable for more devices (including 5mm cable and 2RCA cable). 5,Supports auto‑on or off, use the charger cable to connect the car or other power source, after starting the car or its power source, it will automatically turn on and automatically connect to the car you connected last time. When the car is turned off, it will automatically turn off. 6,The bluetooth adapter supports remote wireless connection and can control remote playback of music. 1 x Bluetooth Receiver1 x 3.5mm Audio Cable1 x USB Power Cord1 x 3.5mm to RCA Cable1 x User Manual Item Type: Bluetooth ReceiverModel: Ti-800Material: ABSBluetooth Version: Bluetooth 5.0Distance: Approx. 10m or 32.8ftPower Supply: DC5VCompatibility: for all Bluetooth audio devices, support for A2DP or AVRCP or HFP protocolFunction: support NFC, support 2 Bluetooth devices at the same timeColor: BlackHow to Use:Connect via NFC Pairing: 1. Connect the USB power supply line to the 5V power supply and see the blue indicator in the "indicator window" flashing and hear the prompt tone, indicating that the NFC desktop Bluetooth audio receiver has successfully entered the pairing standby state. 2. Turn on the NFC function of the mobile phone or other device. 3. Put the NFC sensing area of the mobile phone against the NFC sensing area of the NFC desktop Bluetooth audio receiver for about 2 seconds, see the dialog box on the mobile phone, and then click connect.(If the popup dialog box needs to enter the pairing code, enter "0000" if it does not popup, please ignore.)Connect via Bluetooth Pairing: 1. First connect the USB power supply line to the 5V power supply, and then connect to the product, you will see the blue indicator light flashing in the "indicator window" and hear the prompt tone indicating that the NFC desktop Bluetooth audio receiver has successfully entered the pairing state. 2. Turn on the Bluetooth function of the mobile phone or other device, search for the device named "Ti-800", and click Connect after the search is successful. 3. After clicking connect, the blue light of the "indicator window" flashes slowly and you hear the prompt tone. This means that the device is successfully connected.Note: The next time you use it, you only need to press the power button for 3 seconds to turn it on to automatically connect to the mobile phone or other equipment you used last time.U Disk Playback:After the product is powered on, insert the USB flash drive into the USB port, and it will automatically switch to the USB flash drive to play. If you need to switch Bluetooth, just press and hold the play button. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.