GL
The Klarus GL1 is a pistol-mounted LED weapon light rated at 600 lumens and 1,722 candela. That candela figure works out to an effective positive identification distance of 14 yards and visual impairment out to 2 yards, both calculated from the published beam data. It runs on Lithium Ion and is rechargeable. It weighs 2.13 oz in a body 2.2 inches long. Measured against the 148 weapon lights in the index, it lands on the dimmer side for output (600 lumens), among the least intense 10 percent for beam intensity (1,722 candela), and among the lightest 10 percent for weight (2.13 oz). It is one of 54 entries in the index that qualify as a light in the same 500 to 999 lumen class. The closest listed comparison is Acebeam G10, another light in the same 500 to 999 lumen class, priced at $90.

| Series | GL |
| Light Color | White |
| Emitter Type | LED |
| Lumens | 600 |
| Candela | 1722 |
| Laser | No |
| Effective PID Distance (yds) | 14 |
| Max Effective PID Distance (yds) | Under 20 |
| Effective Visual Impairment (yds) | 2 |
| Max Effective Visual Impairment (yds) | Under 5 |
| Form Factor | Pistol |
| Battery | Lithium Ion |
| Rechargeable | Yes |
| Weight (oz) | 2.13 |
| Length (in) | 2.2 |
| Country of Manufacture | China |
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