This focusable LED head lamp with impressive 710 lumens is extremely easy to operate. Same functions like the larger 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.
 
All Pro head torches share these useful features:
 
Designed so there is no battery compartment behind the head, eliminating the need for cables.
Multi Battery System. Gives a free choice of power sources between common inexpensive batteries, rechargeable batteries or premium batteries.
Fast Focus Change (FFC): adjustable with only one hand.
Three light output settings (100/40/10 percent).
Tactical Defense Strobe (TDS): Strobe-mode (20 Hz).
Beam Adjustment System (BAS) with specially configured reflector lenses.
90° tipping mechanism.
Adjustable and washable headband with rear reflector patch.
High-quality reflectors and scratch-resistant lenses.
Splashwater protected (IPX4).
Function: 1st click 100%, 2nd click 40% and 3rd click 10% light output. The strobe mode can be directly activated from any function.
 
Light Output:      100% =710lm
                                   40% = 285lm
                                   10%  = 70lm 
Run Time:           100% = 3.35h
                                   40% = 8.45h
                                   10% = 23h
Beam Distance: 100% = 175m
                                   40% = 110m
                                   10% = 55m
Chip:                   Cree XP - L 
Battery Type:       1 x UCR 18650 Li-Ion
Dimensions:          87 x 74 x 41mm
Net Weight:        175g
Materials:           Aircraft Aluminium and reinforced plastic.