| Brand | RUSTU |
| Model | WF-501B |
| Color | Black |
| Quantity | 1 |
| Material | T6063 T6 aluminum |
| Emitter Brand | Cree |
| LED Type | XM-L2 |
| Emitter BIN | T6 |
| Color BIN | Cool White |
| Number of Emitters | 1 |
| Brightness | 680 > 580 > 350 > 650 > 410 lm |
| Working Voltage | 3.7 V |
| Circuitry | 2400~2900 mA |
| Number of Modes | 5 |
| Mode Arrangement | Hi > Mid > Lo > Fast strobe > SOS |
| Switch Type | Forward clicky |
| Switch Location | Tailcap |
| Mode Memory | No |
| Runtime | 4 hours (depends battery capacity) |
| Beam Range | 260m |
| Lens | Tempered optical glass |
| Reflector | Aluminum Smooth / SMO |
| Battery Configuration | 1 x 18650 (not included) |
| Strap Included | Yes |
| Clip Included | No |
| Other Feature | Waterproof: IPX7 (underwater 2m); Head diameter: 3cm; Body diameter: 2.5cm; Tail diameter: 2.5cm; Overall length: 13.5cm; Hard anodized: HA-III |
| Certification | CE |
| Packing List | 1 x Flashlight |
Dimensions: 5.28 in x 1.26 in x 1.26 in (13.4 cm x 3.2 cm x 3.2 cm)