BenQ ScreenBar Halo LED Monitor Light, Lamp with Wireless Controller, Adjustable Brightness and Color Temperature, No Screen Glare, Space Saving, Curved Monitors, Back Light Features: Asymmetric optical design only illuminates the desk without causing screen reflection. The Back Light eliminates the contrast between the monitor and the surroundings. Wireless controller saves valuable space and allows you to adjust brightness and color temperature levels over 100 stepless levels for work and leisure. With the patented clip and a wireless controller, the ScreenBar Halo also fits most curved monitors between 1000-1800R. Specifications: Lighting Light Source Dual Color LED Color Rendering Index >95 Illuminance Center Illuminance 800lux (Height 45cm) Color Temperature 2700K ~ 6500K Lighting Coverage (? 500 Lux) 63cm x 40cm Product Color Gray Materials Aluminum alloy ,PC / ABS Accessory (Optional Accessory) Webcam Accessory Power Power Input 5V,1.3A USB Port Power Consumption 6.5W (Max.) Power Supply Lamp : USB / Controller : 3 AAA batteries (included) Dimension and Weight Dimensions (H x W x D cm) Lamp : 50 x 9.5 x 9.7 / Controller : 7.4 x 7.4 x 3.8 Net Weight (kg) 0.8 Gross Weight (kg) 1.56 USB Cable Length 1.5m Monitor Compatibility (thickness) Flat : 0.28''- 2.36'' (0.71cm - 5.99cm) / Curved : 0.28''- 1.65'' (0.71cm - 4.19cm)