W-Thalia USB Led Light and Touch Switch ,Adjustable Brightness Under Cabinet Step Stairs Path Display Led Light Auto Usb Powered Camping Night Light Energy Saving Lamp Light Bar 21 LEDs Touch control:USB lamp with touch switch, just touch the sensor at the end of light to turn on/on the lamp Specfication: 21 pcs ultr-bright LED lights , energy-saving and environment friendly Eye-Care LED lamp: natural LED light, eye friendly, no flickering, and no ghosting protects your vision and reduces eye fatigue Energy conservation:This touch LED light is USB power with low power consumption, only needs DC 5V to run. Use for many places :Can be installed anywhere that you have access to a USB outlet: such as:bedroom, hallway,balcony ,corridor,stair,attic,basement, garage, cellar, wardrobe, hotel ambry,kitchen cupboards,bookcase,tents etc