Features: 1. Can receive a variety of electronic device signal transfer connection 2. Screen digital display, clearly visible 3. High performance chip, quick response 4. A variety of interface cables can support most devices on the market 5. Tablet, desktop computer, audio, car, TV, mobile phone, power amplifier and so on 6. Easy connection, you can set the connection according to different needs 7. Usb flash drives are supported 8. The product is connected with optical fiber cable Product name: digital display Bluetooth receiver Product model: C36 Bluetooth version: Bluetooth 5.3 Transmission distance: Open area up to 10 meters, without any obstacles Power supply mode: Type-C interface Product size: 90mm(L) x 77mm(W) x 30mm(H) Product weight: 55g Interface type: AUX/ Optical fiber/RCA/ USB flash drive Transfer speed: 5 (Mbps) Basic functions: Bluetooth reception/U disk playback Supported devices: mobile phone/tablet/computer/speaker/power player and so on Operation steps: 1. First, connect the Bluetooth receiver to the speaker using a 3.5mm audio cable, then plug one end of the charging cable into the power supply and the other end into the Type-C charging port, and press the multi-function knob to turn on the device; 2. Find "C36" in your phone's Bluetooth search and select Pair; 3. After the phone is successfully paired with the device, you can now play music wirelessly, and the machine can control the up and down music (the multi-function knob can be rotated to the left to increase the volume, and the right to reduce the volume); 4. When your phone is successfully paired for the first time, it will automatically reconnect your phone the next time you turn it on. Note: The product has no built-in battery, please use the power cable before use, and the adapter is controlled within 5V2A Product list: Bluetooth adapter *1 Fiber optic cable *1 RCA Audio cable *1 3.5mm audio cable *1 Power cord *1 Instructions *1