This is the latest timing function USB clip-on plant growing lamp, you can not only set up timing for lighting hours, but also adjust the brightness of the light and the distance between the light and plant according to plant needs. Red and blue light is essential for plant’s seed germination, root growth, and bulb development, formation of chlorophyll. Features: 12 red LEDs and 6 blue LEDs on each end, ultra bright, lower heat and lower powers consumption. Auto-off timing function, set this grow light up for lighting every 3/9/12H (one-headed) or 3/6/12H (2&3 headed) hours. 5 dimmable levels & 3 spectrum modes, red, blue, red&blue lighting to ensure plant photosynthesis. 360 degree flexible neck, free for you to adjust and make lights shine on your plant. The wide linear light design let it cover a larger area and provide energy for more plants. Charged by any USB enabled devices and just clip on, easy to operate and use. Specifications: Material: aluminum alloy + PC Color: black