| Brand | UltraFire |
| Model | D77 |
| Quantity | 1 |
| Color | Black |
| Material | Aluminum alloy |
| Emitter Brand | Cree |
| LED Type | XM-L |
| Emitter BIN | T6 |
| Color BIN | Cool White |
| Number of Emitters | 6 |
| Working Voltage | 4.2~8.4 V |
| Battery Configuration | 4 x 18650 batteries pack (4200mAh / included) |
| Circuitry | 2500mA |
| Brightness | 3000 lm |
| Runtime | 2 hours |
| Number of Modes | 3 |
| Mode Arrangement | Hi>Mid>Fast Strobe |
| Mode Memory | No |
| Switch Type | Reverse clicky |
| Switch Location | Tailcap |
| Lens | Glass |
| Reflector | Aluminum Smooth |
| Flashlight Mounting | Handlebar and helmet |
| Beam Range | 150m |
| Strap Included | No |
| Clip Included | No |
| Packing List | 1 x Bike light (70cm-cable) 1 x 18650 batteries pack (4200mAh with two parallel two series、 50cm-cable) 1 x AC power charger adapter (2-flat-pin plug、 100~240V、 50/60Hz、 120cm-cable) 1 x Headband (50~80cm) 2 x Rubber O-rings |
| Brand | UltraFire |
| Model | D77 |
| Quantity | 1 |
| Color | Black |
| Material | Aluminum alloy |
| Emitter Brand | Cree |
| LED Type | XM-L |
| Emitter BIN | T6 |
| Color BIN | Cool White |
| Number of Emitters | 6 |
| Working Voltage | 4.2~8.4 V |
| Battery Configuration | 4 x 18650 batteries pack (4200mAh / included) |
| Circuitry | 2500mA |
| Brightness | 3000 lm |
| Runtime | 2 hours |
| Number of Modes | 3 |
| Mode Arrangement | Hi>Mid>Fast Strobe |
| Mode Memory | No |
| Switch Type | Reverse clicky |
| Switch Location | Tailcap |
| Lens | Glass |
| Reflector | Aluminum Smooth |
| Flashlight Mounting | Handlebar and helmet |
| Beam Range | 150m |
| Strap Included | No |
| Clip Included | No |
| Packing List | 1 x Bike light (70cm-cable) 1 x 18650 batteries pack (4200mAh with two parallel two series、 50cm-cable) 1 x AC power charger adapter (2-flat-pin plug、 100~240V、 50/60Hz、 120cm-cable) 1 x Headband (50~80cm) 2 x Rubber O-rings |