| Brand | SingFire |
| Model | SF-51 |
| Color | Black |
| Quantity | 1 |
| Material | Aluminum alloy |
| Emitter Brand | Cree |
| LED Type | XM-L |
| Emitter BIN | T6 |
| Color BIN | Cool white |
| Number of Emitters | 1 |
| Brightness | 800 lm |
| Working Voltage | 3.7 V |
| Circuitry | 2000 mA |
| Number of Modes | 5 |
| Mode Arrangement | Hi > Mid > Lo > Fast strobe > SOS |
| Switch Type | Reverse clicky |
| Switch Location | Tailcap |
| Mode Memory | Yes |
| Runtime | 3~4 hours |
| Beam Range | Above 300m |
| Lens | Glass |
| Reflector | Aluminum textured / OP |
| Battery Configuration | 1 x rechargeable 18650 (included) |
| Strap Included | Yes |
| Clip Included | No |
| Other Feature | Water resistant / Hard anodized、 strap length: 13cm |
| Certification | CE / RoHs |
| Packing List | 1 x Flashlight |
| | 1 x 18650 battery |
| | 1 x 2-Flat-Pin plug power adapter (100~240V) |
| | 1 x English user manual |
Dimensions: 5.28 in x 1.26 in x 1.26 in (13.4 cm x 3.2 cm x 3.2 cm)