Got the Olight T10 for fathers day.....pretty nice light indeed.
Uses 1 X CR123A batteries - primary or rechargeable. (not included).
Ultra Efficient, State of the art CREE 7090 XR-E Q5 WC LED up to 190 lumens on high!
Unique half smooth, half orange peel metal reflector ensures a smooth beam and excellent throw.
Specially designed for water resistance and anti-roll.
AR coated glass lense.
Aluminium alloy case with MIL-SPEC Type III black hard anodized finish.
Water proof to IPX-8 standard, anti-shattering, anti-scratching and anti-rolling. MIL-STD-810F compliant.
Size: 89.6mm/3.5"(L) x 21.6mm/.85"(D)Weight:43g/1.5oz without battery.
http://img151.imageshack.us/img151/8966/p1050281m.jpg