Commodity parameters: Power：40W Voltage: 110 v Color Ratio：660: 850 — 1:1 Body size：338*110*16mm /13.3*4.33*0.62inch Material：Aluminum alloy +ABS Net weight：650 g/PCS Note： Indoor use only : Light is not waterproof , can not use in water or in wet places. Installation : To avoid the danger of electric shock,please turn off the power switch before installation. Extremely bright : Do not look directly at the LEDlight when it’s works. Features: 1. Achieving general health and wellness goals 2. Promote hair growth, collagen production, healthy skin and joints 3. Increase cell vitality and reduce inflammation 4. It can't replace medicine Packing list: Physiotherapy lamp + plug cord