A
The Klarus A3 is a round-body LED handheld light rated at 2,200 lumens and 140,625 candela. That candela figure works out to an effective positive identification distance of 129 yards and visual impairment out to 18 yards, both calculated from the published beam data. It runs on Lithium Ion and is rechargeable. It weighs 4.94 oz in an aluminum body 6.03 inches long. Measured against the 362 handheld lights in the index, it lands on the brighter side for output (2,200 lumens), in the most intense quarter for beam intensity (140,625 candela), about in the middle for weight (4.94 oz), and among the least expensive 10 percent for price ($30). It is one of 75 entries in the index that qualify as a light in the same 2,000 to 3,999 lumen class. The closest listed comparison is Klarus FlatTac X2, the same brand's light in the same 2,000 to 3,999 lumen class, priced at $60.

| Series | A |
| Light Color | White |
| Emitter Type | LED |
| Lumens | 2200 |
| Candela | 140625 |
| Effective PID Distance (yds) | 129 |
| Effective Visual Impairment (yds) | 18 |
| Max Effective PID Distance (yds) | 80+ |
| Max Effective Visual Impairment (yds) | 15+ |
| Form Factor | Round |
| Battery | Lithium Ion |
| Rechargeable | Yes |
| Material | Aluminum |
| Weight (oz) | 4.94 |
| Bezel Diameter (in) | 1.71 |
| Length (in) | 6.03 |
| Country of Manufacture | China |
| Average Price | $30 |
| Laser | No |
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