1. Best Samsung LM301B/ LM301H LED Chip offer high yielding 2. IP65 waterproof silicone coating. 3. Samsung Normal Spectrum: Full Spectrum, 660nm+730nm, 660nm+730nm+385nm. 4. The timer can set up the automatic on/off time to manage the plant growing cycle. 5. Non-welded DC connection mode, easy to repair and replace. 6. Applicable to diversify greenhouse vegetables, flowers and plants for cultivation lighting.