... input, constant current/voltage output, different form conventional CFL with 120 times strobe, flicker and dazzle,very comfortable, keep the health ... for replacement or moneyback, please contact George before return it.LED Tube ApplicationWidely used in places such as drinkery, hotel, hall, ... ;as Jewelry, gold and silver jewelry and fashion show lighting. 2013 Hottest T8 9W 2Feet 600mm LED Tube 830lm