Always have a little light wherever life takes you with the Energizer LED Pen Light. This compact, lightweight, & reliable metal pen light packs a surprising punch, delivering up to 35 lumens of directional light at 4X brighter than standard LED technology. With up to 20 hours of runtime, you can be confident this pocket flashlight will be there in emergency situations, for DIY jobs, or when youve dropped your phone under the car seat. Battery Type: Alkaline; Flashlights Type: Penlight; Power Source(s): 2 AAA (Included); Bulb Type: LED.