Channels: 2.1 Input sensitivity: 500mV Bluetooth version: 5.0 (unobstructed, 10 meters) Applicable speakers: 20-100W, 4-8 ohms Output power: left and right channels Less than 50w, subwoofer Less than 100W Applicable power supply: DC 12-24V/5A or above (the higher the voltage, the greater the output power) Protection mechanism: overvoltage, undervoltage, overheating, AC/DC detection, short circuit protection Multiple inputs: Bluetooth/AUX/USB/TF card/K song/reverberation adjustment Microphone volume and master volume are independently adjustable. Plug Type:US Plug, it applies to Canada, India, Mexico, Thailand, Taiwan, the , the Philippines and so on. Voltage:AC110V Colour:Gold Material:Metal+Plastic Package Contents: 1 * Putter board 1 * Remote control 1 * Power cord 1 * DC cable 2 * 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 the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.