Lumintop GT Nano (2020) review

450 lm output
23400 cd intensity
1 x 10180 Li-Ion battery

The Lumintop GT Nano (GTNano) released in 2020. It uses Osram KW CSLNM1.TG LED, SMO reflector and 1 x 10180 Li-Ion battery. The powerful emitter in this flashlight provides up to 450 lm output, 23400 cd intensity, and a beam distance of 306 m.

The memory function is a nice feature, the light will remember the last used mode. It has a strobe function, which is one of the most effective self defense tools available. The GT Nano flashlight is rechargeable easily via USB port.

Table of contents:

Lumintop GT Nano (GTNano) specifications

NameGT Nano
Rated 3/5 based on 801 user votes.


The aluminium body of flashlight treated with a Type III hard-anodized, anti-abrasive finish.

Weight17 g
Length52.5 mm
Body diameter14 mm
Head diameter24 mm
Materialaluminium alloy with HAIII hard-anodized finish


The emitter of GT Nano manufactured by Osram, a German lighting manufacturer. The GT Nano has a smooth reflector. The properly focused smooth reflector gives you a more cohesive hotspot and therefore throws better. It has an AR coated lens.

EmitterOsram KW CSLNM1.TG LED
Color temperature6500 K
LensAR coated glass
Switchelectronic side


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.

Flux450 lm
Intensity23400 cd
Throw306 m
CD/LM factor52


The GT Nano has mode memory. Mode memory means that the light will remember the mode you were using when the light was last turned off, and when you turn it on again. The ramping mode of the GT Nano is intuitive, and lets you seamlessly ramp the output up and down over almost the entire output range. The GT Nano is tactical strobe ready. The strobe light is disorienting to the person it is aimed at which makes it difficult for them to concentrate. It has the SOS beacon function for an emergency situation. The SOS flashes Morse code so you can signal for help when needed.

Mode memoryyes
Ramping modeyes


The battery indicator lets you know when the battery is low, charging, or fully charged. This flashlight can charge the battery with an integrated charger, and it works with any USB power source. 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 built-in thermal control automatically adjusts brightness output to prevent overheating.

Battery1 x 10180 Li-Ion battery
Battery indicatoryes
Charger portmicroUSB
Thermal regulationyes
Impact resistance1 m


It comes with a battery. The battery must be fully charged before you first use your GT Nano. The lanyard prevents accidental loss of the flashlight.

Package contents10180 battery
2 x spare o-rings
microUSB cable
microUSB charger

The performance of the Lumintop GT Nano 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 Lumintop GT Nano, then don’t hesite and signal the problem to us.

Lumintop GT Nano (GTNano) pictures

Lumintop GT Nano / GTNano photo Lumintop GT Nano / GTNano photo Lumintop GT Nano / GTNano photo Lumintop GT Nano / GTNano photo Lumintop GT Nano / GTNano photo Lumintop GT Nano / GTNano photo Lumintop GT Nano / GTNano photo
Lumintop GT Nano / GTNano

Lumintop GT Nano (GTNano) comparisons

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