The huge beam of this Walther Pro XL3000 flashlight is generated by three specially configured reflector lenses, each measuring 35mm (Beam Adjustment System). Power is provided by four D-alkaline (1.5V) or four NiMH rechargeable batteries, each with 1.2V, producing a 1850-lumen spot light.
Triple reflector lense system
Beam Adjustment System
Light levels: 100%, 40%, 10% & direct strobe
Anti-reflecting aircraft aluminium
High-grade aluminium reflector and anti-scratch lens
Temperature Protection System
Multi Battery System
4x D alkaline 1.5V battery
Hard carry case
Carrying strap incl. fastening rings
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.