I received the Nitecore Thumb from BangGood.com for the review.
Here's the purchase link, and a Coupon (25% off): c04b86
The Thumb is an EDC/Keychain/Workinglight, featuring a stainless clip, a head with 2 5mm white LEDs that can be tilted 90°, and a pair of red LEDS. The thumb has an integrated battery, that can be charged with the micro USB charging port. I believe it could be seen as an upgraded version of the Nitecore Tube.
The Thumb comes in this box, containing the light itself and a couple of splitrings.
The new features make it a bit longer than the tube but still compact. The micro USB port is still covered by a rubber cover.
The head looks like the one of the Tube, with horns to protect the emitters, but with another 5mm LED, and can be tilted. The head requires a bit of force to be tilted, and doesn’t move if you shake the light around.
On my sample, the white light flickers slightly while the head is moving, while if the head is firm in position the light doesn’t flicker at all.
On the body there are 2 electronic switches, one that control the white LEDs, and the other controls the 2 red ones.
Beamshots at 0.5 meters from the wall
According to my eye meters, that’s a more or less accurate pic of how much light does the red LEDs produce.
The “cracked” pattern is not a problem of the pic, there’s in real life.
Output and runtime
Tested with the internal battery
the runtime plot with RED white light doesn’t show an increase in output both because the red output is low and my setup doesn’t get the light coming from the side of a light.
I’d like to see the Nitecore Thumb coming with a higher red output (5-10 lumens) and a neutral-warm tint for the 2 main 5 mm LEDs.
In the meanwhile, it is attached to my keys.
Thanks to: AntoLed for the camera help and the luxmeter