
Coast G20 (2017) review
The Coast G20 (G20) released in 2017. It uses unspecified 5mm LED, TIR reflector and 2 x AAA batteries. The powerful emitter in this flashlight provides up to 36 lm output, 121 cd intensity, and a beam distance of 22 m.
It uses a TIR lens to form the beam pattern. This light does not have memory function.
Table of contents:
Coast G20 (G20) specifications
Brand | Coast |
---|---|
Name | G20 |
Type | G20 |
Rating | |
Launch | 2017 |
Form | flashlight |
Body
The aluminium body of flashlight treated with a Type III hard-anodized, anti-abrasive finish.
Weight | 68 g |
---|---|
Length | 144 mm |
Body diameter | 16 mm |
Head diameter | 16 mm |
Material | aluminium alloy with HAIII hard-anodized finish |
Colors | black blue green orange red |
System
A TIR lens works on the principle of total internal reflection. The TIR lens collimates the LED light into efficient, well-controlled light beams that maximize the usable lumens in the target area.
Emitter | unspecified 5mm LED |
---|---|
Color temperature | 7700 K |
Reflector | TIR |
Lens | TIR |
Switch | mechanical rear |
Performance
The throw is the calculated distance in meters at which the flashlight produces a light intensity of 0.25 lux. The candela per lumen (cd/lm) ratio can be used to determine if a flashlight has a spot or flood type beam. Well-focused spot beams can be over 100 cd/lm, tactical flashlights are typically between 20-100 cd/lm, and work lights are less than 10 cd/lm.
Flux | 36 lm |
---|---|
Intensity | 121 cd |
Throw | 22 m |
CD/LM factor | 3.36 |
CRI | 73 |
Software
Modes | 1 mode |
---|---|
Mode memory | no |
Ramping mode | no |
Strobe | no |
SOS/Beacon | no |
Features
The G20 cannot charge batteries directly. You may need an external charger to keep your battery going. A protected battery is recommended as the light itself does not have low voltage protection (LVP). This light does not have temperature control feature.
Battery | 2 x AAA batteries |
---|---|
Battery indicator | no |
Charger port | no |
LVP | no |
Thermal regulation | no |
Protection | IPx4 |
AUX LEDs | no |
Magnetic | no |
Accessories
Package contents | 2 x AAA batteries |
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The performance of the Coast G20 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.
The specifications above 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 Coast G20, then don’t hesite and signal the problem to us.
Coast G20 (G20) pictures

Coast G20 (G20) comparisons
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