The Walther TGS 20 light, a member of the Tactical Guard Series, produces a beam of 300 lumens with its CR123 batteries. It has an IPX 8 waterproof rating to 15m. The TGS 20 features two brightness settings (100 and 10 percent plus Tactical Defense Strobe) which ensures ease of use.
The Multi Battery System (MBS) gives users a choice between powerful CR123 batteries or rechargeable ICR18650 lithium-ion batteries.
126mm length, 92g
2X CR123 Lithium 3.0V battery
ANSI FL1 Standard - Technical Data
The American National Standards Institute (ANSI) published in 2009 the "Flashlight Basic Performance Standard", FL1 for short. So you can compare flashlights across manufacturer boundaries neutral. This lamp has been tested to stringent ANSI specifications.