Convoy M21B SST40 flashlight review
The Convoy M21B SST40 flashlight was released in 2019. It uses Luminus SST40 LED, SMO reflector and 1 x 21700 Li-Ion battery. The powerful emitter in this flashlight provides up to 2300 lm output, 40000 cd intensity, and a beam distance of 400 m.
Curious to know if this Convoy flashlight is top-notch? Stay tuned for the answer!
Table of Contents
The content of this article reflects our own experiences and viewpoints. We aim to offer insights on a topic, and we hope others find it helpful and motivating. Additionally, we make every effort to provide accurate and comprehensive coverage. If you found an error or something lacking in the specifications for the Convoy M21B SST40, then tell us.
The flashlight is a must-have tool for outdoor activities. These include camping, hiking, and night-time exploration, it offers guidance and safety. This light has 4 modes of lighting. The M21B SST40's mode memory makes the user experience more seamless and intuitive.
Convoy M21B SST40 specifications
| Brand | Convoy |
|---|---|
| Name | M21B SST40 |
| Type | M21BS |
| Rating | |
| Launch | 2019 |
| Form | flashlight |
This Convoy flashlight is compact and handheld. It is easy to carry and maneuver.
Body, materials, weight, colors
| Weight | 120 g |
|---|---|
| Length | 141.5 mm |
| Body diameter | 27.1 mm |
| Head diameter | 35.7 mm |
| Material | aluminium alloy with HAIII hard-anodized finish |
| Colors | black |
This 120 g flashlight is slightly heavier than most handheld flashlights. But, it is still at a reasonable weight. The best flashlight size depends on personal preference. It also depends on intended use and the specific features you want. The aluminum bodies can be anodized. This adds a protective layer and a wide range of color options for flashlight bodies. The HAIII coating is often matte or textured. This finish improves grip and feels nice in the hand. This flashlight features a captivating black color.
System, LED, lens, reflector
| Emitter | Luminus SST40 LED |
|---|---|
| Color temperature | 6500 K / 5000 K |
| Reflector | SMO |
| Lens | AR coated glass |
| Switch | mechanical rear, forward clicky |
Luminus is a US-based LED manufacturer. In the lighting industry, it has gained recognition as reputable. Color temperature is a characteristic of light. It is used to quantify the color appearance of light sources. Flashlights use the smooth reflector when long-range light is important. This includes searchlights and thrower flashlights. The AR coating on the lens maximizes light transmission. This makes the flashlight more effective in darker environments.
The M21B SST40 uses multiple switches. The switches' placement and design determine this. They allow for one-handed operation. Mechanical switches often offer tactile feedback. Users can feel a distinct click or resistance when they press the switch. A simple press or click of the rear switch turns the flashlight on or off. This removes the need for complex button combinations or multi-step processes.
Performance, flux, intensity, throw
| Flux | 2300 lm |
|---|---|
| Intensity | 40000 cd |
| Throw | 400 m |
| CD/LM factor | 17.39 |
The 2300 lm output of M21B SST40 provides great flexibility. You can adjust the brightness to fit different needs. The M21B SST40 flashlight has 40000 cd. It can light objects at greater distances. The throw distance is the farthest distance the flashlight can light an object. The cd/lm factor is the candela-to-lumen ratio. It shows how concentrated a light source's output is.
Software, user interface, modes
| Modes | 4 modes |
|---|---|
| Mode memory | yes |
| Ramping mode | no |
| Strobe | no |
| SOS/Beacon | no |
A flashlight's modes are different output settings or brightness levels. They can be chosen to meet different needs and preferences. The flashlight has mode memory. It remembers the mode you were using when the light was last turned off. It stays in that mode when you turn it on again.
Features, battery, protections
| Battery | 1 x 21700 Li-Ion battery |
|---|---|
| Battery indicator | no |
| Charger port | no |
| LVP | yes |
| Thermal regulation | yes |
| Protection | IPx7 |
| AUX LEDs | no |
| Magnetic | no |
The Convoy M21B SST40 flashlight is powered by 1 x 21700 Li-Ion battery. The M21B SST40 doesn't have charger port. The Low Voltage Protection helps save the battery's capacity. It stops it from reaching a critically low voltage. The built-in thermal control adjusts brightness output to prevent overheating. The "7" in the IPx7 rating shows that the flashlight can survive being submerged in water. It can withstand a certain depth for a limited time without getting damaged.
Accessories, package contents
| Package contents | lanyard |
|---|
The lanyard of the M21B SST40 protects the flashlight from accidental damage. It does this by stopping it from falling or hitting the ground.
According to the ANSI/NEMA FL1 Standard, we measure the performance of the M21B SST40 flashlight 30 seconds after switching on the light. The ANSI/NEMA FL1 2009 Standard is a set of flashlight performance guidelines.
Conclusion, pros and cons
This Convoy flashlight, like any other, has its strengths and weaknesses. Let's take a close look at both sides to understand this flashlight better. I share my thoughts on its standout features and the parts that might need improvement. Keep in mind, these are just my opinions, and you might have a different perspective.
Pros
- lightweight
- aluminium body
- AR coated lens
- tactical switch
- super bright
- multiple modes
- mode memory
- low-voltage protection
- thermal regulation
- waterproof
Cons
- cool light
- no battery indicator
- no built-in charger
- no auxiliary LEDs
- non-magnetic
Photos
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