o input: 3.5mm stereo input, USB o input, Bluetooth 5.0, RCA input, TF card, USB input (compatible with computer, mobile phone, OTG) Features TPA3116 chip, maximum power output up to 50W; with 12V 5A power supply, achieves actual output power of 30W*2 at 4 ohms Hi-Fi sound quality with clear and crisp o performance, no ble noise; engineered with optimized circuit design to ensure noise-free operation even at maximum output Long press power switch to turn on Output power: 50W + 50W Power requirements: DC 9V–24V Bluetooth range: Up to 12 meters (in open space without obstacles) Bluetooth version: Bluetooth 5.0 Speaker impedance: 4Ω–16Ω Color: Silver Gray Material: Plastic Package Contents: 1 x Digital o Power Amplifier Note: The package includes only the items listed above; other accessories are not included. Note: Lighting effects and display settings may cause slight color variations between the image and the actual product. Measurement tolerance: ±1–3 cm.