Instructions: 1. Turn on Bluetooth in the device's system settings, search for the device name "HID Remote01" and pair it; 2. Press the "OK" and "ON/OFF" buttons at the same time, then release the red light; 3. Point the device's remote control at the infrared head of the remote control to be learned, then press the learning button on the device's remote control, the red light flashes, and the learning is successful. 4. Press and hold the "OK" and "Volume +" buttons simultaneously until the red light flashes and the device will restore the factory settings. Material: ABS Color: Black Package Contents: 4 x Remote Control (without 2 x AAA battery) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in a little different from the real thing. The measurement allowed error is +/- 1-3 cm.