| Brand: | Ultra-Fire |
| Model: | WF-501B |
| Material: | Aluminum alloy |
| Emitter Brand: | Cree |
| LED Type: | XM-L |
| BIN: | T6 |
| Color: | Cool White |
| Number of Emitters: | 1 |
| Voltage Input: | 3.7~4.2V |
| Battery Configuration: | 1 x 18650 (not included) |
| Circuitry: | 1000mA |
| Brightness: | 385lm |
| Runtime: | 1 hour |
| Number of Modes: | 1 |
| Mode Arrangement: | Steady on |
| Mode Memory: | No |
| Switch Type: | Forward clicky |
| Switch Location: | Tailcap |
| Lens: | Coated glass lens |
| Reflector: | Aluminum Smooth / SMO |
| Strap Included: | Yes |
| Clip Included: | No |
| Beam Range: | 150 meters |
Dimensions: 5.31 in x 1.18 in x 1.18 in (13.5 cm x 3.0 cm x 3.0 cm)
Weight: 3.28 oz (93 g)