Features 1、Full Spectrum Growth Light: This USB plant light provides a full spectrum of light, promoting plant growth and development, and increasing the rate of photosynthesis. 2、Adjustable Timing: With 3H/9H/12H timing options, you can customize the light exposure to suit the needs of your plants. 3、Nine Levels of Brightness: This light features nine levels of brightness, allowing you to adjust the light intensity according to the specific needs of your plants. 4、Versatile Use: Ideal for use in greenhouses, plant factories, seed breeding, horticultural crop cultivation, vegetables, melons, flowers, succulents, potted plants, and landscape plants. 5、Eco-friendly: Free from harmful elements such as mercury and lead, this plant light is environmentally friendly and designed for easy recycling and reuse. Features: Full Spectrum Growth Light: This USB plant light provides a full spectrum of light, promoting plant growth and development, and increasing the rate of photosynthesis. Adjustable Timing: With 3H/9H/12H timing options, you can customize the light exposure to suit the needs of your plants. Nine Levels of Brightness: This light features nine levels of brightness, allowing you to adjust the light intensity according to the specific needs of your plants. Versatile Use: Ideal for use in greenhouses, plant factories, seed breeding, horticultural crop cultivation, vegetables, melons, flowers, succulents, potted plants, and landscape plants. Eco-friendly: Free from harmful elements such as mercury and lead, this plant light is environmentally friendly and designed for easy recycling and reuse. Specifications: Voltage: DC 5V Adjustment angle: 360° Power: 10W, 20W, 30W, 40W, 50W(optional) Three lighting modes: red light, blue light, purple light Timer setting: 3H/9H/12H (Timer switch button color: blue for 3 hours, green for 9 hours, red for 12 hours.) Dimming: 9-Gear dimming USB cable length: about 1.5 meters Package size: 35.5*10.3*10.3cm Package weight: 360g(10W), 500g(20W), 662g(30W), 815g(40W), 950g(50W) Notes: 1. Do not look at the grow light when operating. 2. It is best to keep the distance between the light and the plant at 20-30 cm. 3. Normally this grow light should be irradiated for 8-12 hours per day. Package List: 1 * Lamp Package List 1 * Lamp