Bluetooth Starry Light: Specifications: Brand: U`King Color: black Material: plastic Power: 5W Power input: USB DC 5V LED light source: 1 * 3IN1 RGB LED Green starry sky: 532 nm Lighting effects: automatic mode, constant lighting, fade in and fade out, flashing Working temperature: 14°F~104°F (-10°C~40°C) Projection coverage: 161~538ft² (15~50²) Function: adjustable brightness, light color, volume, timing (0.5, 1, 2, 3 hours), can connect to Bluetooth to play music USB cable length: about 150cm .