Walther Tactical XT2 Light.

A true power pack that’s on its way to becoming a bestseller: powerful and inexpensive. The 400 lumen Walther Tactical Xtreme features two brightness levels, a stroboscopic effect and a handy, sturdy aluminum housing. It is operated by a button at the bottom of the housing and requires two CR123A batteries. Batteries and lanyard included.
Batteries: 2x CR123 (3V)
Brightness: 400 / 120 lumens
Lumen: 400
Batteries: 2 x CR123 (included)
Length: 138 mm
Weight: 120 g
Shipping weight: 200 g