Each puck has a light output of 40-lumens with a color temperature of 4000K bright white light. Long lasting, energy efficient LEDs provide a smooth light output with a lamp life rated for 30, 000 hours. Convenient tap on and off activation makes it easy for anyone to use, perfect for under cabinets, work spaces, and recreational areas. At full battery charge these lights will last for 20-hours of continuous use. Experience no hassle wireless lighting with these battery-operated lights, no addit