The MPLS is a simple light source with multiple mounting options with the package including three mount brackets; a helmet mount, a MOLLE mount and an accessory rail mount. This makes it usable for helmets, combat gear and any weapon with a rail which makes it very versatile.
The light sits on a flexible rod and the whole thing rotates up to 45 degrees in its bracket which means however it is attached you will still be able to cast light in virtually any direction you need to.
The light is not terribly bright, it is not really purposed for full combat illumination but rather just a basic navigation/reading light. At 10 lumens of brightness it will not dazzle or blind you and the light will not go too far; just enough to help highlight that fiddly task you are performing.
The unit is powered by 1x CR2016 battery (included) and will pull about 36 hours of use.