SureFire 2211 WristLight Series High-performance LED and proprietary refractive optic produce a Broad beam at three useful levels: 300, 60, and 15 lumens The press of either ambidextrous pushbutton switch Activates the LED on high, or it can be cycled through all levels by pressing both buttons simultaneously Securely straps to support-hand wrist via a durable rubber wristband for instant access and automatic alignment with pistol when using normal two-handed grip Integral luminox Watch features self-illuminating Dial for low-light readability.Built-in LED fuel gauge lets you know when to recharge battery High-strength, lightweight aerospace aluminum construction with Mil-Spec hard Anodizing for extreme durability