Features: EYE-CATCHING COLORS & 4 DIMMER MODES: Watch this LED puck lights come to life with RGBW light and 10 brightness dimming modes. 4 PRESET LIGHTS & 16 COLORS LIGHTS UNDER FLASH MODES: 4 preset lights: White, red, green, blue. 10 light levels can be suited to reading/sleeping and different modes. USB OR BATTERY OPERATED: Under-cabinet lights can be worked individual (Press it to turn on/off or dim) INSTANT INSTALLATION/ DISASSEMBLE: Installing the under cabinet light is easy and effortless. All you need is a flat, smooth surface and stick the light on it! To replace the battery, just screw off the light and change. (Note: Never place the light under an overheated or humid environment to avoid damaging its service life.) COUNTLESS USES: The LED Puck Light is ideal for bookshelves, display cases, wine cellars, cabinets, offices, closets, hallway, stair, step, utility room, basement and everything in between. Its slim design will blend in seamlessly. Specification: Voltage: 4.5 Volts Power: 0.6W Shell Material: ABS Light Color: RGBW LED Quantity: 1Pcs lamp Power Supply: Lamp: 3 AAA batteries (Not included) or USB (Cable Not Included) Control Method: Manual Lamp Size: 65*65*25mm / 2.56*2.56*0.98inch Package includes: 1Pcs Lamp