2010 OLIGHT T10-T R5 Cree XP-G R5 (Use 1x CR123A Battery) The Olight T10 features three brightness levels and strobe. The Olight illumination level memory saves the last level used before the light was turned off, returning to that level when the light is turned back on.Easily operated, the various modes are accessed by pressing the tail cap switch. Illumination level is adjusted by twisting the head.Digital regulation using the constant current technique means that output at every brightness level will be constant not fluctuating with battery life. Additionally the constant current technique means greater efficiency for longer runtimes and the most effiencient usage of the battery.The Olight T10 utilizes a unique linear pattern for brightness adjustment; which is different from traditional PWM used by many competitors, to do away with the strobing effect some users can perceive.Features Ultra high performance Cree XP-G R5 LED provides Shock-Proof dependable lightingThree brightness levels plus StrobeFull textured reflector for flawless far reaching beamHigh Output, 210 Lumens maxUltra efficient advanced digital power management system for smooth and even brightness over the duration of battery lifeUser friendly interface, loosen then tighten head to select desired output levelAutomatic memory function, remember last used setting & will come on at same level as when turn offTactical click-on/off switch with momentary on function Solid Aluminum Construction, Ergonomic design with anti-slip knurled finish for firm grip and easy operationTough durable Type III Hard AnodisingBuilt to meet Mil-spec MIL-STD-810FUltra Clear Glass lens, non scratch with Anti-Reflective CoatingO-ring seals provide high water resistant and long service life Specifications LED Cree XP-G R5, life span up to 50000 hoursMaximum output210 Lumens DimensionsL 88mm (3.46'') x D 21.6mm (0.85''), Weight:36g /1.27oz(Excluding Battery) Battery Uses 1x CR123A Lithium 3.0V cell, or Rechargeable Li-ion 3.7v 16340 / RCR123 batteryFunctionsThree brightness 210lm/70minutes-100lm/200minutes-5lm/84hrs plus Strobe Accessories included Lanyard, Spare O-rings, Spare Rubber switch boot*Includes Wrist Lanyard, Spare tail cap switch cover and O-rings.Tenergy Propel CR123A with UL-Listed and UN-DOT ApprovalHigh power CR123A Lithium Batteries Can be used for many applicationsPhoto cameras, Flashlights, light meters,and many other photo equipments. Ultra high energy density and lasts 3-5 times longer than ordinary alkalinebatteries in high current drain devices like digital cameras. Fast Flash performance with a consistent and very short recycle time.This highly performance CR123A can replace the following modelsCR123, DL123A,K123A, EL123AP, VL123A, 5018LC, and CR17345.UL listed and Passed UN transportation tests T1-T8. UL # MH48285WarningCan Not Be Recharged!