The main lighting module, or head, is average in size when compared to most current LED headlights, though not as compact as the low power headlights which use only 0.5mm LEDs. Its head houses the LEDs and switching mechanisms. At the top of the head you'll find 2 separate switches. Looking from the top, the right switch activates the white LED while the left switch activates the red/green LEDs. Both switches provide good tactile feedback and audible click. On its front face you'll find the various LEDs and reflector used to focus the white LED. There's also a diffuser lens which converts the beam profile from spot to flood. This diffuser lens is well designed, it has a raised tab which provides an easy grip. It also flips down and slots into place within the head when unused with a firm click so there's no worry of it accidentally flipping out even during rough use. The entire head can also be vertically pivoted downwards to slightly over 90°. The various parts making up the head case is made from a very tough plastic and is advertised to survive a 15-foot.

There are 2 elastic straps, both about 2.5cm wide. The main strap is horizontally orientated while the second is vertically orientated and goes across the top of the head when worn. The vertical strap can be quickly unclipped from the head end when required, such as when you need to wear the headlight over a large helmet. The inner yellow side of the straps have 2 wavy streams of silicon adhered to it which provides additional friction to keep it in place when worn over smooth plastic hard hats and such. A thick insulated cable runs along the right side of the horizontal strap, connecting the head to the battery pack placed at the rear. The cable is coiled at the end towards the battery pack so the cable length can stretch to accommodate various lengths while not having any loose cable slack. It's a good choice to have the battery pack separate from the head and placed at the rear since the light runs on 3x AA cells. A very tight and firm latch holds the battery case cover in place, these is no chance of the cover getting accidentally opened. The cover flips open about half way and not all the way down. Batteries are placed in alternate directions in the battery pack. I did notice a couple of wires exposed inside the battery compartment, but are well routed so they don't get in the way. Along the inner rim of the battery case is a stiff rubber lining which makes it waterproof. Energizer provides a lifetime warranty on this product.

If you're unfamiliar with any of the terms used in this review, click here for explanations on common flashlight related vocabulary.

As advertised, this headlight comes with 4 LEDs. 1 high output white Cree XR-E, 2 red Nichia 0.5mm for night vision, and 1 green Nichia 0.5mm for pipe inspection. Each of these LED options will have 2 distinct beam profiles thanks to the diffuser lens. Without the diffuser lens, the white beam profile throw a relatively narrow-focused hotspot with an average corona around it. The focusing provided by the reflector isn't perfect as the hotspot is slightly lopsided. The beam color temperature on my sample is slightly cool. There are some minor beam artifacts present, such as the dark ring around the hotspot as is common with most XR-E based lights. High mode on white is advertised to output 100 lumens.

The red LEDs are pre-focused and provide a mid-sized spot illumination area with almost no spill. The spot area has quite a bit or ring-shaped artifacts, but are only barely noticeable. The green LED is also pre-focused and provides a similar, but slightly smaller spot as compared to the red. The green beam profile is a defined circle with some beam artifacts in the middle region which has some slight dark areas.

The diffuser lens uses a honeycomb design to diffuse the light from the LEDs. This design provides a good balance of diffusing the light while still providing a good amount of intensity. It reduces the loss of transmitted light as compared to the more common diffusers which have fine, granular textures.

The white LED is activated by the right switch in the following order:
Off > White (High) > White (Low)

The colored LEDs are activated by the left switch in the following order:
Off > Red > Green

As you can see from the runtime graph below, this light actually provides a very good balance of regulation, runtime and output intensity. I didn't like how the output drops to about 80% during the initial 30 minutes on high, though I'd consider this just a minor nitpick on my part.

Note: Control shots were not taken for diffused red and green as they were too dim to be captured.

The Good - Very good fit and finish. Well thought design elements from the main light body down to the straps. Good balance of runtime and output intensity.

The Bad - Slightly heavier than other headlights with similar output due to the use of 3x AA cells, but this is a trade-off for longer runtime.

The Relative - Beam profiles with all LEDs have some noticeable artifacts. White LED has a slightly cool color temperature.

Silicone on inner side of straps.

Diffuser lens retracted.

Diffuser lens raised.

Vertical strap unclipped from head.