Streamlight Protac 2L 260 Lumens Features: Case Material/Lens: 6000 Series machined aircraft aluminum with anodized finish. Tempered glass lens, o-ring sealed Dims/Weight: Length: 4.77 in (12.12 cm); Major Diameter: 0.90 in. (2.29 cm); Barrel Diameter: 0.77 in. (1.96 cm); 2.8 oz., 79 grams with batteries Light Source: C4® LED technology, impervious to shock with a 50,000 hour lifetime Output/Run Time: HIGH: 350 lumens; 6,300 candela peak beam intensity; 159m beam runs 3.25 hours LOW: 30 lumens; 600 candela peak beam intensity; 49m beam; runs 35hours STROBE: runs 6 hours On/Off: Multi-function, push-button tactical tailswitch. One handed operation of momentary, variable intensity or strobe mode. TEN-TAP® Programmable Switch: Allows the user to select one of three different programs. To change to the next program, starting from the "Off" position, tap the switch rapidly 9 times (within 0.4 seconds per tap) and hold it down the 10th time. Continue holding the switch until the light turns off (approximately 1 second), then release the switch. Available programs: 1.) High-Strobe-Low (Factory Default) 2.) High Only 3.) Low-High Battery: Two 3V CR123A lithium batteries (included) LED Solid State Power Regulation provides maximum light output throughout battery life IPX7 waterproof to 1m for 30 minutes; 2m impact resistance tested Anti-roll facecap Removable pocket clip Serialized for positive identification RoHS compliant Approvals: Meets applicable European Community directives