"Features: Three Dimmable Modes: It has 3 dimmable modes to suit varied stages of your plants growth accroding their need. Strong Sturdy Clip and 360 Degree Adjustable Gooseneck, pretty easy for you clip it any where you want and adjust the light which position you want plants to be lighted. Timming Setting Option: The timer has 3 modes for you to choose: 3, 9, or 12 hours. Please pay attention to how to set the hours, the FIRST press on the timer setting button, it would be 3 hours, the SECOND press would be 9 hours, and THREE press would be 12 hours. One more thing, this is a ONE-WAY TIMER, it can be automatically after 3H or 9H or 12H, but it has to be returned back on manually.Item name: LED grow light Size: 1 or 2 or 3 or 4 Lamp 1 Lamp: 15W 1 Lamp:30W 1 Lamp:45W 1 Lamp:60W Beam angle: 360 Body Material: PVC Useful life: 50000hrs Timing: 3 or 9 or 12 hours Auto Memory: On or Off and Circular-Memory Timer Plug: USB Adjustable: 360 Degree used for garden, indoor plants, greenhouse vegetables etc It is suitable for indoor plant seedlings grown in a hydroponic greenhouse at your home or you placed in your office. It helps to speed up the growth of potted plants, flowering plants, foliage, and succulent plants. It meets the conditions of plant growth without sunlight. The red light promotes photosynthesis, germination, bloom and fruit bearing." "all Products From Us Have Undergone Strict Quality Checks. if There Is Any Quality Problem Or You Are Not Satisfied With The Product contact Us. We will reply within 24 hours. we Will Give You The Best Solution."