Item Type: Bluetooth Receiver Material: ABS Color: As shown in the picture Model: Ti-800 Bluetooth: Bluetooth5.0 Distance: 10m / 33ft Power Supply: DC5V Compatible: All Bluetooth audio devices support A2DP/AVRCP/HFP protocol Function: Support NFC, support simultaneous connection of 2 speaker devices 1、Connecting to 5mm/2RCA audio interface, speakers without Bluetooth function can also play wirelessly.  2、It supports the connection up to 10 meters/33 feet, controlling the music playing in a long distance. Support USB playback, plug and play.  3、Support NFC mobile device, touch to connect/disconnect without manual connection.  4、Insert the car USB, connect the AUX cable, and connect the mobile phone to Bluetooth to achieve wireless transmission.  5、Using NFC wireless + chip, using a power isolator with a protective ring, no loss of sound quality.