Make & Model - Olight R50 Seeker
Max Lumen Output - 2,500
Max Runtime - 50 hrs.
Overall Length - 5.2 in.
Weight with Batteries - 9.1 oz.
Battery Type - Rechargeable 26650 (one, included)
Controls - Side push-button with lockout mode
Output Modes - Turbo, high, medium, low, strobe
Waterproof Rating - 2-meter immersion
MSRP - $120
URL - http://www.olightworld.com

The R50 Seeker packs a serious 2,500-lumen punch. That's more than double the output of its predecessor, the R40, and far more than the other lights we tested. The body diameter and texture make it easy to hold, and the power switch placement feels natural. The included 26650 lithium battery is rechargeable via USB, but in a survival situation you'd probably be hard-pressed to find a spare. The light rolls easily on flat surfaces, and it lacks a belt clip or holster. Still, it's a lot of power in a pocket-sized light.

Pros: Blinding 2,500-lumen output, Great ergonomics

Cons: Tends to roll on flat surfaces, Uncommon battery type