
Nitecore Thumb (2017) review
The Nitecore Thumb (THUMB) released in 2017. It uses 2 x unspecified LEDs, no reflector and integrated Li-Ion battery. The powerful emitter in this flashlight provides up to 85 lm output, 170 cd intensity, and a beam distance of 26 m.
This light has 3 modes of lighting. This light does not have memory function. The Thumb flashlight is rechargeable easily via USB port.
Table of contents:
Nitecore Thumb (THUMB) specifications
- Brand
- Nitecore
- Name
- Thumb
- Type
- THUMB
- Rating
- Launch
- 2017
- Form
- flashlight
Body
- Weight
- 25 g
- Length
- 74 mm
- Head diameter
- 24 mm
- Material
- plastic
- Colors
- black
System
- Emitter
- 2 x unspecified LEDs
- Color temperature
- 6500 K
- Reflector
- no
- Lens
- no
- Switch
- electronic side
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
- 85 lm
- Intensity
- 170 cd
- Throw
- 26 m
- CD/LM factor
- 2
Software
It has the SOS beacon function for an emergency situation. The SOS flashes Morse code so you can signal for help when needed.
- Modes
- 3 modes
- Mode memory
- no
- Ramping mode
- no
- Strobe
- no
- SOS/Beacon
- yes
Features
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. A protected battery is recommended as the light itself does not have low voltage protection (LVP). This light does not have temperature control feature. It has auxiliary LEDs which make it really nice looking.
- Battery
- integrated Li-Ion battery
- Battery indicator
- yes
- Charger port
- microUSB
- LVP
- no
- Thermal regulation
- no
- Protection
- IPx8
- Impact resistance
- 1 m
- AUX LEDs
- yes
- Magnetic
- no
- Specials
- adjustable head
red light
Accessories
- Package contents
- keyring
The performance of the Nitecore Thumb 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 Nitecore Thumb, then don’t hesite and signal the problem to us.
Nitecore Thumb (THUMB) pictures

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