MADKING LED Wireless Puck Lights Battery Powered Epistar LED Chip 3528SMD Warm White Light Color Stick Anywhere Easy installation, wireless puck led lighting, battery powered (runs on 3xAAA batteries), attach anywhere you want with double adhensive sticker; High brightness 3528SMD LED Chip, energy saving and long lifespan, generally replace one set of batteries in every three month; Ideal for night light, once batteries are installed into each unit, you can turn them on individually by pressing the center of lamp; Size: D90 *21mm (D3.5*0.8inches); ABS material, black decorative body color with warm white light color.