Product Name: Smart Digital Display Bluetooth Adapter Model: T188 Bluetooth version: V5.0+EDR Frequency range: 2400-2483.5MHz Frequency Response: 10Hz-20KHz Input parameters: DC 5V power supply Interface type: AUX/RCA Effective distance: barrier-free 10-15 meters Signal-to-noise ratio: more than the 90dB Peripheral support: U disk/TF card Bluetooth protocol: HFP/A2DP/AVRCP Supported formats: MP3/WAV/WMA/APE/FLAC Body size: L110 x W75 x H23(mm) Power supply interface: TYPE-C USB interface Colour:black Material:Metal + Plastic Package Contents: 1 * Bluetooth 5.0 adapter 1 * USB C power cable (80cm/2.62ft) 1 * RCA cable (1m) 1 * 3.5mm AUX audio cable (1m) 1 * English manual Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.