| Color | Black |
| Brand | UltraFire |
| Model | W-878 |
| Quantity | 1 Set |
| Material | Aluminum alloy |
| Emitter Brand | Cree |
| LED Type | XM-L |
| Emitter BIN | T6 |
| Number of Emitters | 1 |
| Color BIN | Cool White |
| Working Voltage | 3.7 V |
| Power Supply | 1 x 18650 (included) or 3 x AAA (not included) |
| Current | 2.1 A |
| Theoretical Lumens | 1000 lumens |
| Actual Lumens | 900 lumens |
| Runtime | 2~3 Hour |
| Number of Modes | 5 |
| Mode Arrangement | Hi、Mid、Low、Fast Strobe、SOS |
| Mode Memory | No |
| Switch Type | Reverse clicky |
| Switch Location | Tailcap |
| Lens | Glass |
| Reflector | No |
| Beam Range | 150~200 m |
| Strap/Clip | Strap included |
| Other Features | 18650 battery without protection board、 with 3600mAh capacity and 3.7V voltage; Charger: 100~240V、 3.7V / 500mA; Zoom-to-throw |
| Packing List | 1 x Flashlight 1 x 18650 battery 1 x US plug battery charger (100~240V) 1 x AAA battery holder 1 x 18650 battery holder |