Full Spectrum Plant Lights: With 20 full spectrum led bulbs on each annular light, which have 30% higher illuminance than lamp bulb. Automatic Circulation Timing Switch: You can set it up a 24-hour on & off cycle since there is an 8h/12h/16h automatic circulation timing switch on the USB charging line IP20 waterproof grade, can prevent ordinary life waterproof. Using high-brightness LED integrated chip, good heat dissipation, high brightness, longer life 3.5V USB input,It can be used with laptops, mobile power supplies, and 5V adapters, which is more convenient to use Easy to Use: Just stick end of acrylic supporter to the hole on the light and stick another end into the plant pot. After connecting the power supply and choosing the illumination time, your potted plants will get a cute angel halo to accompany them to grow up. (Tip: The light should be about 2.4 inches from the top of plant) Function: Use a of plants to distribute the light spectrum to provide energy for plant growth and increase the output of customers' plants,It can provide strong and uniform intensity of light to plants. Scientific ratios of our full spectrum plants growth light can replace sunlight, promote plant germination, flowering, fruiting, improve the color of succulent plants and increase plant yield. Luminous flux: 301lm Luminous color: 4000k sunlight Power: 6.2W Power-on : USB-5V Number of lamp beads: 20 LED Waterproof rating: IP20 colour:White Material:ABS+PC Package Contents: 1 x annular plant growth lights 1 x acrylic supporters Only the above package content, other products are not included. Note: Light 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.