Two brightness levels and strobe mode
High Mode: 1500 Lumens / 3.1 Hours
Low Mode: 450 Lumens / 10.5 Hours
Strobe: 1500 Lumens / 10 Hz / 6.2 Hours
Max throw: 800 meters.
Anti-shattering, scratching ultra clear lens,
with 99% light transmission
Weatherproof: IPX-68 Water/Dust rating
Battery pack: 6 x18650 (7.2v, 6.6A)
Dimensions: Length: 11.34″
Bezel Diameter: 3.15″
Weight: 42.19 oz. (With battery pack)
Color: Black, Hard Anodized finish.
The OLight SR91 is considered the “little” brother of the SR90. The two lights are very similar. Basically, the SR91 has a smaller head/bezel and a reduced lumen output, with just alittle less throw, or effective range. So I recommend you read my review on the SR90 for more information on these lights. This review will just tough lightly on the differences between the two lights.Size/Weight:
The main advantage the SR91 has over the larger SR90 is its smaller size and weight. It makes a pretty big difference when you are handling the lights. Dont get me wrong, the SR91 is still no small light, but it just seems to be much easier to handle than the heavier SR90. It seems better balanced with the smaller head/bezel. The body of the two lights are the same. They both even have the very useful built in charge indicator lights.
Output & Runtime:
While the SR91 may not have the output of the SR90, its still quiet bright, and has much longer runtimes, which may actually make it even more useful than the SR90 in some situations.
These lights and more can be found at www.4sevens.com