Rechargeable Built-in 2000mAh battery, this light provides long battery life, you don't need to replace the battery. Just use 5V USB for fast charging. Versatile Built-in rechargeable lithium battery Lights can be used anywhere, such as bedrooms, cupboards, closets, workshops, garages, stairs, hallways, storage rooms, attics, kitchens, basements, refrigerators, etc. Easy installation with built-in magnets on the back of the Lamp. No screws or drilling required, you can attach it directly to metal surfaces. For non-metallic surfaces, you can rely on the self-adhesive magnetic pads provided. 2 Touch Sensors and 5 Illumination Colors The light has two touch sensors on the side. You can turn it on or off with just one touch. If you short press the touch sensor, you can change the lighting color if you want. Adjustable Brightness Long press the touch sensor (>3 seconds) to adjust the brightness. Continuous light intensity. It's a pleasant light that brightens the environment well and doesn't dazzle the eye.