The Nextorch flashlight features four different light modes and a memory function as well. Its compact size makes it easy to carry around inside your pocket. This K3 model delivers 180 lumens and has a 38-hour runtime. It also features a stainless steel clip, an ultra-clear PC lens and is made of aerospace grade aluminum with type two hard anodization. All of the above features make this pen light ideal for doctors, mechanics and other professionals who need bright light in one slim and handy package. The Nextorch flashlight comes with two AAA batteries with an LED lifespan of 100,000 hours.