【Easy to Charge and Install】 The light bar is magnetically attached to the swing arm and is removable for charging. A USB charging cable is included. The built-in lithium battery has a 4000 mAh capacity. Alternatively, using the included screws, simply hang the base of the lamp on the wall. 3 Lighting Colors and Adjustable Brightness: Choose from 3 lighting options: warm light/warm white light/white light (3000K/4000K/5000K). At 300 lumens, it's bright enough to illuminate your picture or artwork. The brightness is continuously adjustable to any desired level. The optimal light coverage area is less than 127 x 127 cm. 2 Wireless Painting Lighting Modes: Turn the LED light on/off, change the light color, or adjust the brightness using the remote control or by touching the button on the side of the light bar. LED Wall Light Timer Function: Use the remote control to set a 15/30/60 minute timer to automatically turn off the light. Battery-Powered Work Light Size: 33 cm long light bar, 17.8 cm distance between the metal arm and the wall. The 300-lumen glow can illuminate a 101.6 cm wide image, painting, picture frame, statues, antiques, decorations, etc.