Convoy M21B SST40 2300lm In-depth review, Pros and Cons
The Convoy M21B SST40 (M21BS) 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.
This flashlight has a wide range of applications across various domains. It is an indispensable tool for outdoor activities like camping, hiking, or night-time exploration, offering guidance and safety. This light has 4 modes of lighting. The mode memory of M21B SST40 contributes to a more seamless and intuitive user experience.
Convoy M21B SST40 (M21BS) pictures
The specifications below are based on the official data published by the manufacturer, but we also take user reviews into consideration. If you found an error or something lacking in the specifications above for the Convoy M21B SST40, then don’t hesite and signal the problem to us.
Convoy M21B SST40 (M21BS) specifications
This Convoy flashlight is designed to be compact and handheld, making it easy to carry and maneuver.
|Body diameter||27.1 mm|
|Head diameter||35.7 mm|
|Material||aluminium alloy with HAIII hard-anodized finish|
This 120 g flashlight would be considered slightly heavier than average for a handheld flashlight, but it is still within a reasonable weight range. This weight range is often found in smaller and more compact flashlights designed for everyday use or portability. The ideal length of a flashlight depends on personal preference, intended use, and the specific features and functionality you're looking for.
The aluminium bodies can be anodized, providing a protective layer and a wide range of color options for flashlight bodies. Anodizing enhances the corrosion resistance, hardness, and scratch resistance of the aluminum, while also allowing for a variety of attractive finishes. The HAIII coating often has a matte or textured finish, which enhances grip and provides a comfortable feel in the hand. This can be particularly useful in situations where a secure grip on the flashlight is essential, such as in wet or slippery conditions. This flashlight features a captivating black color.
|Emitter||Luminus SST40 LED|
|Color temperature||6500 K / 5000 K|
|Lens||AR coated glass|
|Switch||mechanical rear, forward clicky|
The emitter of M21B SST40 manufactured by Luminus, a US-based LED manufacturer. Luminus is recognized as a reputable LED manufacturer in the lighting industry. They are known for producing high-quality LEDs with excellent performance and reliability. Color temperature is a characteristic of light. It is measured in units called Kelvin (K) and is used to quantify the color appearance of light sources, particularly white light.
The smooth reflector is typically used in flashlights where long-range illumination is a priority, such as searchlights or thrower flashlights. By minimizing light scattering and maximizing light directionality, the smooth reflector can produce a tighter and more concentrated beam that reaches greater distances. The AR coating on the lens maximizes light transmission, making the flashlight more effective in darker environments.
The M21B SST40 uses multiple switches. Depending on the placement and design of the switches, a multiple switch configuration can allow for one-handed operation. This is particularly helpful in situations where you need to hold or manipulate objects with one hand while using the flashlight with the other hand. The M21B SST40 has mechanical switch. Mechanical switches often offer tactile feedback, allowing users to feel a distinct click or resistance when the switch is pressed. This feedback helps users confirm that the switch has been activated or deactivated, providing a reassuring sense of control and awareness. The rear switch of M21B SST40 is designed to be rugged and durable, capable of withstanding harsh conditions and repeated use.
The 2300 lm output of M21B SST40 provides greater versatility, as you can adjust the brightness levels to suit different lighting needs. The M21B SST40 flashlight with 40000 cd has an extended throw distance, allowing you to illuminate objects or areas at greater distances. This can be advantageous for outdoor activities, search and rescue operations, or scenarios where long-range visibility is required.
The throw distance refers to the maximum distance at which the flashlight can effectively illuminate an object or target. The stated throw distance typically indicates the point at which the brightness falls below a specified threshold, such as 0.25 lux. Flashlights with a higher cd/lm ratio typically excel in long-range throw and focused beam applications, while flashlights with a lower cd/lm ratio may provide a wider and more evenly distributed beam for closer-range illumination or general-purpose use.
Modes on a flashlight refer to different output settings or levels of brightness that can be selected to suit different needs and preferences. The M21B SST40 has mode memory. Mode memory means that the flashlight will remember the mode you were using when the light was last turned off, and when you turn it on again.
|Battery||1 x 21700 Li-Ion battery|
The Convoy M21B SST40 flashlight is powered by 1 x 21700 Li-Ion battery. The M21B SST40 doesn't have charger port. A charger port is a designated connection point or interface where you can plug in a charger to recharge the flashlight's battery. This flashlight has a built-in low voltage protection (LVP) to prevent damage to the cell from over-discharge, so protected cells are not necessary. The M21B SST40 has thermal protection feature. The thermal protection mechanisms are designed to monitor and regulate the temperature of the flashlight during operation. This feature helps prevent overheating, which can be detrimental to the flashlight's performance, battery, and overall safety. The "7" in the IPx7 rating indicates that the M21B SST40 flashlight, can withstand being submerged in water up to a certain depth for a limited time without being damaged.
The lanyard of M21B SST40 helps protect the flashlight from accidental damage by preventing it from falling or hitting the ground.
The performance of the Convoy M21B SST40 flashlight is measured according to the ANSI / NEMA FL1 Standard 30 seconds after switching the light on. The ANSI/NEMA FL1 2009 Standard is a set of flashlight performance guidelines.
Convoy M21B SST40 (M21BS) comparisons
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