The number of lamp beads is sufficient, with 72 single lamp heads and 144 two lamp heads. The full spectrum of led sunlight is 4000K. Dual spectrum switching, one is 48LED 660nm red light, and the other is 24LED (16LED white light 8LED blue light). The timing can be switched by a single channel, or the switching and timing can be switched on by two channels at the same time. Power: 7W (single head actual power), 10W (double head actual power), voltage: DC 5V 9-speed intelligent dimming, with 3/9/12h timing function, in the case of uninterrupted power, the plant light will have a 24-hour memory cycle timing (power failure needs to be reset). Suitable for indoor home office potted plants, such as green flowers and plants, fat-leafed succulents, scientific light source ratio, to meet the light required by plants, to produce chlorophyll under the light to achieve plant photosynthesis, to promote plant growth and flowering to prolong flowering. Specification: Material: ABS+PC Mask+Stainless Steel Tube Lamp Bead Model: SMD 2835 Voltage: DC 5V Single Head Light: 7W Double Head Light: 10W Life Time: 50000 Size Chart: Single Head: 175x175x47mm / 6.89x6.89x1.85inch Double Head: 342x192x38mm / 13.46x7.56x1.50inch Package Includes: 1 Piece Plant Grow Light 1 Piece Controller Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wish you a wonderful on-line shopping!