Another member of the Slim Line series, the Walther Pro SL65 delivers an astounding 759 lumens when using the batteries supplied with the flashlight. In this case two CR123 lithium batteries. The Multi Battery System (MBS) also allows use of an ICR18650 lithium-ion rechargeable battery, which increases the light output to 810 lumens.
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
2x CR123 Lithium 3V 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.