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Exposure Diablo Mk.3 Light

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Item # EXP0014

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Item # EXP0014


In a world of daily technological advances, it's easy to become complacent to all but the truly remarkable. And gram for gram, this remarkable 975 lumens Diablo will set a new a benchmark for output. It's the lightest big-output light on the market. The Exposure Lights Diablo Mk.3 Light reaches this critical output by combining three top-of-the-line Cree XPG emitters into a package small enough to wear on your helmet without ever noticing its presence. The output is equal to Exposure's Toro Mk.3 Light, but the battery pack on the Diablo is smaller, cutting the total lamp weight by 150 or so grams (roughly 60% lighter). This makes it infinitely better for use on your head.

With the built-in battery pack, the Diablo Mk.3 Light will run for 1 hour on the 900 lumens high setting. This is a third the run-time of the 975 lumens Toro Mk. 3 Light. Dropping it down to medium will net you 3 hours of use, and it will run for 10 hours on the low setting. The flash setting will go for days. The power button is on the back of the unit, and it has a clear silicone covering that allows you to see a colored indicator. This does two things for you. (1)By pushing the button with the light on, you'll change the power setting, and the button will indicate what mode you're in -- Green(high), Amber(medium), or Red(low). (2)After two seconds, the indicator will automatically be your fuel gauge, and you'll know how much juice is left in your battery pack just by looking at the color of the indicator -- Green(100-50%), Amber(50-25%), Red(25-5%), and Red flash(5%-empty).

Like all Exposure Lights, the Diablo Mk.3 Light is a self contained unit. That's right; there are no external batteries or wires to connect them. The CNC machined aluminum housing contains the rechargeable Lithium Ion batteries and all of the electronics that control the LED lamp unit. Within the machined housing, O-rings seal each interlocking section to make it totally weatherproof. After all, Exposure Lights are manufactured in the U.K. by the same folks that ...the Diablo is all about a remarkable power to weight ratio... create USE components, and we hear that there's plenty of dreary weather in the U.K. for testing purposes.

The Diablo Light has what Exposure calls their Smart Port Technology Plus. Essentially, it's a cylindrical plug on the back of the lamp unit that allows you to insert the smart charger. But it also enables you to plug in accessories like additional white LED lamps to bolster the output or a red LED taillight to make you more visible from behind. It will automatically recognize each accessory and configure the system to take a charge or power accessory lights. It's a simple matter of plug and play. You can also add piggyback battery packs to extend the run-time of the Diablo Light. A remote switch is even available to create easier access for quick light control. We see this being a handy accessory for commuting, as the Diablo is certainly bright enough to blind pedestrians and other cyclists on the path, so we'd use it to dim the light when we approached oncoming trail users.

Exposure builds in a thermal protection circuit to keep your light safe from damage caused by overheating. If the internal temperature gets too high, the light will automatically drop down to the next lowest setting. It will remain at the lower setting until the temperature inside the housing returns to within the normal operating range. At that time, the light will automatically bump back up to the high setting. If this happens, don't be alarmed as the light has been saved from harm.

The Exposure Lights Diablo Mk.3 Light offers the most available light in a helmet mounted package. It comes with a sturdy threaded mount to secure it to your helmet. All that is required is a vent hole in the helmet, as the mount has built-in washers on top and bottom. You simply screw it together, clamping the ribs aside the vent hole between the two pieces. The top of the mount has a C-shaped clip that snaps securely around the body of the Diablo Light housing. And if you'd rather mount the light to your bars, exclusive to Competitive Cyclist, is an additional handlebar mount included at no extra charge. Should you get your light muddy, Exposure recommends cleaning their lights with a soft, damp towel.

Exposure Lights have a two year warranty against defects in materials and workmanship.

Competitive Cyclist is an authorized USA Exposure retailer. Only Exposure products purchased from an authorized USA retailer will include a genuine USA compliant charging system and a USA product warranty.

Tech Specs

Claimed Weight:
124 g
Batteries Included:
Battery Location:
Backup Power Source:
Bulb Type:
Voltage Regulator:
Burn Time:
[high] 3 hours, [medium] 10 hours, [low] 24 hours
Recommended Use:
night riding
high, medium, low
Power Source:
built-in battery pack

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