ThruNite Ti4 CW lm Compact LED Penlight, Cool White A compact and lightweight "penlight" style LED flashlight - great for a variety of applications Always starts in Firefly mode - ideal for tasks like dentists using it as an endoscope The anodized aircraft-grade aluminum body is easy on the skin, feels good in the hand Dependable & Bright: A max regulated runtime for 137 hours and a max output of 252 lumens Outstanding construction gives the Ti4 the durability to meet the IPX-8 waterproof standard