It comes with a set of screw-on colour filters and diffusers that are interchangeable with those that fit the main diffusers of its flashguns, and alter the light output of the built-in aiming lights of those guns.
However, you can decide whether you want to bolt such a lamp onto a camera rig or use it as a stand-alone lamp. Its output of 700 lumens is certainly enough for use as a primary diving light and, powered by three AA batteries, it neatly falls into line with other kit you might use that employs the same-size batteries.
It weighs 230g complete with batteries.

Power Source
If you insert three Eneloop AA batteries of the type popular for use with underwater flashguns you’ll get a good hour out of the lamp, but if you use lithium batteries the burntime more than doubles.
Alkaline batteries provide a burntime somewhere in between.
Unscrewing the front section accesses the battery compartment, and I noted with pleasure the double O-ring protection provided against flooding. It’s always embarrassing for me to return a lamp I have flooded to a sometimes less-than-understanding distributor.
Not only that, but this INON lamp employs big, generous-gauge O-rings not dissimilar to those of its sibling flashguns. An extra O-ring discourages over-tightening of the head.

The Beam
A 30° beam is good for most diving scenarios, and although the beam reflected the rectangular shape of the Cree XM-L T6 light source, it proved to be uncannily even.
Put one of the supplied diffusers on and the angle of beam doubles. The quality of the light is good enough for photography, provided your stills or video camera can be used at an ISO setting high enough to get a good exposure.
If you are shooting jpegs or trying to balance with daylight in the shadows, you have the choice of screwing on an amber filter (diffused or not), and if you plan on sitting in the dark to watch a mandarinfish performance, you can opt for a red filter that will give you light that appears not to disturb their hasty courtship.

The lamp is very slim at less than 3.5cm in diameter at its widest part. It’s also very lightweight when it comes to transport.
The whole thing has a fine milled finish that makes it easy to grip. It is also the sort of thing you can stuff up a wetsuit sleeve should you not have a pocket for it. There is a generous and meaty lanyard that will allow you to dangle the device if you so wish.
I was relieved to discover that this lamp was switched on and off by a simple knurled knob at its back end rather than by screwing the head down. Righty-tighty, lefty-loosey!

Beaver Quasar, £199
Scubapro Phad 4, £208
UK Aqualite 90 eLED, £221

PRICE £195
OUTPUT 700 lumens
BURNTIME Up to two hours
SIZE 20cm x 3.4cm
ACCESSORIES Filters & diffusers included
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