Parameter flashlight

Сolour rendering index

СRI is a parameter  indicating how accurate a "given" light source is at rendering color when compared to a "reference" light source. The higher the CRI, the better the color rendering ability.

Light source with CRI=100 emanates optimum light  excellent at color rendering. Natural sunlight is considered to have CRI=100. The lower the CRI the worse color rendering is.

Light torches with a CRI of 90 are considered maximal, the most common index is between 80 and 95.

OLDI-light torches come with CREE LEDs that have CRI of 92 and higher.

Color tepterature

Color temperature is conventionally expressed in Kelvins, and varied from 3000K to 5000K.

Color temperature of 3000 K is "the warmest", of 5000 K - "the coolest".

The image shows the approximate color temperature range.

Lumen (lm) is a measure of the total quantity of visible light emitted by a source. Below you may find the figures for incandescent bulbs. Regular 100 watt incandescent bulb has 1340 lm.

OLDI-light torches are between 2000 lm and 2654 lm.


I use original Li-ion 4000mAh rechargable batteries from ROBITON.

The advantages:

  • They yield up to 10 times more charge-discharge cycles as compared to regular models
  • Failure interval is up to 1000 cycles
  • They function in cold temperatures (down to -30’C) without loosing their operating properties