The Walther Pro HL31r has an impressive 710 lumens and comes with a rechargeable battery. This focusable LED headlamp is extremely easy to operate. It has the same functions like the larger Walther Pro lights, one-hand focusing, a latching, up to 90° tipping mechanism (practical for setting the HL31r on a table), microcontroller with temperature control and a lot more. The Multi Battery System (MBS) accepts a wide range of batteries.
Beam Adjustment System
Swivel function (90°)
Light levels: 100%, 40%, 10% & direct strobe
Adjustable and washable headband
Anti-reflecting aircraft aluminium & reinforced synthetic material
High-grade aluminium reflector and anti-scratch lens
Temperature Protection System
87mm x 74mm x 41mm
Adapter for 3x AAA
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.