CLIP & Grow LED Grow Lights offer optimal lighting for your plants. With 4 ultra-flexible gooseneck lamps and a powerful controller with timer, clip and grow anywhere for all seasons! The mixed bundle is the best option that covers all stages of growth. Model: CNG-4A Length - 27” (10” head only) Shell Material - Aluminum Power - 23.5 W PAR/PPF - 35.1 μmol/s Lumen Output - 1720.4 lm CRI - 91 Input Voltage - 100-240V Batteries Required? No Lifetime - 50,000 hrs Certification - ETL Certified Adapter