Turbo
SureFire M640T Turbo Scout Light Pro
The SureFire M640T Turbo Scout Light Pro is a rifle-mounted LED weapon light rated at 650 lumens and 100,000 candela. That candela figure works out to an effective positive identification distance of 109 yards and visual impairment out to 15 yards, both calculated from the published beam data. It runs on CR123A and is not rechargeable. It weighs 5.2 oz in an aluminum body 5.6 inches long. Measured against the 148 weapon lights in the index, it lands on the dimmer side for output (650 lumens), among the most intense 10 percent for beam intensity (100,000 candela), on the heavier side for weight (5.2 oz), and among the most expensive 10 percent for price ($409). 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 SureFire M340DFT Pro Turbo Mini Scout Light Pro, the same brand's light in the same 500 to 999 lumen class, priced at $399.
| Series | Turbo |
| Light Color | White |
| Emitter Type | LED |
| Lumens | 650 |
| Candela | 100000 |
| Laser | No |
| Effective PID Distance (yds) | 109 |
| Max Effective PID Distance (yds) | 80+ |
| Effective Visual Impairment (yds) | 15 |
| Max Effective Visual Impairment (yds) | 15+ |
| Form Factor | Rifle |
| Battery | CR123A |
| Rechargeable | No |
| Material | Aluminum |
| Weight (oz) | 5.2 |
| Bezel Diameter (in) | 1.125 |
| Length (in) | 5.6 |
| Country of Manufacture | USA |
| Average Price | $409 |
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