| Brand | Ultrafire |
| Model | 503B |
| Quantity | 1 Piece |
| Color | custom10000 |
| Material | Aluminum alloy |
| Other Features | Zoom-to-throw |
| Emitter Brand | Cree |
| LED Type | XM-L |
| Emitter BIN | T6 |
| Number of Emitters | 1 |
| Color BIN | Cool White |
| Working Voltage | 3.6~6 V |
| Power Supply | 1 x 18650 (not included) |
| Current | 2.4 A |
| Actual Lumens | 860 lumens |
| Runtime | 2 Hour |
| Number of Modes | 5 |
| Mode Arrangement | Hi、Mid、Low、Fast Strobe、SOS |
| Mode Memory | No |
| Switch Type | Forward clicky |
| Switch Location | Tailcap |
| Lens | Plastic |
| Reflector | No |
| Beam Range | 150 m |
| Strap/Clip | Strap included |
| Output(Lumens) | 801-1000 |
| Runtime(Hours) | 1.1-2 |
| Packing List | 1 x Flashlight 1 x Strap |