


The first M4 upgrades, only 50 pieces in black, arrived for a sneak preview.
Couldn't load pickup availability
Free shipping on all order above $49.99 to most countries.
Most flashlights can directly get 5 years warranty; battery and accessories get 1 year warranty.
Any questions, please email to info@sperasflashlight.com
![]() |
![]() |
![]() |
![]() |
![]() |


"Don't just take our word for it. Check out the independent, hands-on lumen testing by the flashlight experts."
— Read the full deep-dive at: 1Lumen.com
Despite being tiny, it punches way above its weight. Because we paired the Luminus SFT40 LED with a custom TIR lens, the beam is incredibly focused. You'll get a solid 700 meters of throw on Turbo mode, which is crazy for a pocket light.
Absolutely. Out of the box, it comes with a short 18350 battery for max portability. But if you're going camping and need longer runtimes, just grab the optional M4 Plus Battery Tube. It swaps right on and lets you run standard 18650 batteries.
Physics dictates that pushing 2000 lumens from a small metal tube will create heat. But don't worry—the M4 has a built-in smart temperature regulator. Once it gets too warm, it automatically steps down the brightness so you don't burn your hand or fry the LED.
We built an electronic lockout directly into the switch. Just click it a few times (check the manual for the exact sequence) and the light is totally disabled. It won't accidentally turn on and drain your battery while bouncing around in your backpack.
| Model | SPERAS M4 V2 |
|---|---|
| Light Source | Luminus SFT40 2.0 |
| Max Output | 2000 lumens |
| Max Beam distance | 700 meters |
| Max Intensity | 122,500cd |
| Max running time | 220 hours(at the ECO mode) |
| Modes | turbo-high-medium-low-eco-strobe-sos |
| Switch | 1 side switch |
| Compatible Battery | 1 * 18350 Li-ion battery |
| Charging Type | USB-C charging |
| Water Resitance | IP68, underwater 2 meters |
| Impact Restance | 1.5 meters |
| Dimensions | 78.5(length)*40.4(head)*26(tube) mm |
| Weight | 87.2g/3.07oz (exclude battery) |
| Body Material | Aerospace 6061 Aluminium with military type III hard anodising surface |
| Application | Camping, Hiking, Wildlife Spotting, Cave Exploration, Home Use |
| Note: the above data has been measured in accordance with international flashlight testing standards ANSI/NEMA FL1 using SPERAS 3.7V/1100mAh 18350 battery under laboratory conditions. | |












