About the size of a marker, with two AAA batteries, this ProTac handheld flashlight fits nicely into your pocket and is big on function and performance. C4 LED technology, impervious to shock with a 50,000 hour lifetime. LED Solid State power regulation provides maximum light output throughout battery life. 3 light output levels: high, low and strobe. High â?? 80 Lumens, 1550 candela peak beam intensity, 80 meter beam distance, 1.5 hours runtime. Low 10 Lumens, 200 candela peak beam intensity, 28 meter beam distance, 30 hours runtime. Strobe - 5 hours runtime. Multi-function, push-button tail switch for one-handed operation. Optimized electronics provides regulated intensity. Uses two AAA alkaline batteries (included). Durable and abrasion-resistant machined aluminum construction with Type II MIL-Spec anodized finish. Anti-roll head prevents the light from rolling away when you set it down. Removable pocket clip for easy access. O-ring sealed glass lens. IPX7. waterproof to 1 meter for 30 minutes. 5.62-In (14.27 cm). 2-Ounce (57g) with batteries. Limited lifetime warranty. RoHS compliant..