Understanding Flashlight Specs: Lumens, Candela, and IPX Ratings Explained
13th Feb 2025
Understanding Flashlight Specs: Lumens, Candela, and IPX Ratings Explained
When you're looking for a high-performance flashlight, the technical specifications can often feel like a different language. At Wolf Spark, we believe that choosing the right gear should be straightforward. Whether you're looking for an Every Day Carry (EDC) companion, a Tactical powerhouse, or a reliable Bike Light, understanding these key terms will help you find the perfect fit.
1. Lumens: The Total Light Output
Lumens measure the total amount of visible light emitted by a source in all directions. Think of it as the "volume" of light.
•High Lumens (3000+): Ideal for illuminating a large open area, such as a campsite or a search area. The NITEYE by JETBeam E26 KUNAI (3600 Lumens) or M37 Pro Tactical Flashlight (3700 Lumens) is a prime example of high-output performance.
•Moderate Lumens (500–1500): Perfect for general use, hiking, or as a reliable work light. Example NITEYE by JETBeam RRT01 Raptor Nichia (950 Lumens ) or HR30 Headlamp (950 Lumens).
•Low Lumens (under 100): Great for close-up tasks like reading a map or finding your keys without blinding yourself.
2. Candela vs. Lumens: Focus Matters
While Lumens tell you how much light is produced, Candela tells you how intense that light is at the centre of the beam. This is often referred to as the "throw."
•High Candela = Long Throw: A focused, narrow beam that reaches far into the distance. This is essential for search and rescue or tactical applications.
•High Lumens + Low Candela = Flood: A wide, even light that fills your immediate surroundings but doesn't reach very far.
Pro Tip: If you need to see something 200 meters away, look for a light with a high Candela rating. If you need to see everything in a 10-meter radius around you, focus on Lumens.
3. IPX Ratings: How Waterproof is Your Gear?
The IPX rating tells you how well your flashlight is protected against water. For outdoor enthusiasts in the UK, this is one of the most important specs to check.
| Rating | What it Means | Best For |
| IPX4 | Splash-proof from any direction. |
Light rain or accidental splashes.
|
| IPX7 |
Waterproof when submerged up to 1 meter for 30 minutes.
|
Heavy rain, dropping it in a puddle, or crossing a stream. |
| IPX8 | Submersible beyond 1 meter (usually up to 2 meters) for extended periods. | Professional tactical use and extreme weather conditions. |
At Wolf Spark, many of our NITEYE by JETBeam models are rated IPX8, ensuring they perform even in the harshest environments.
4. Impact Resistance: Built to Last
Most premium flashlights also list an Impact Resistance rating (usually in meters). This indicates the height from which the light can be dropped onto a hard surface without breaking. Our tactical models are built with aero-grade aluminium to withstand the rigours of professional use.
Ready to Find Your Perfect Light?
Whether you're gearing up for a night ride or looking for a reliable EDC tool, we've got you covered. Check out our latest arrivals from NITEYE by JETBeam and find the light that matches your needs.