UltraFire WF-501B XM-LT6 5-Mode 510-Lumen Memory White LED Flashlight
With Strap (1 18650)

LED - Light Emitting Diode - a small light source

LENS - An optical element which converges or diverges light

Battery - A device used for the storage of electricity

White - A colour combining all colours

Digital - A system that uses only 0s and 1s to transmit data

Glass - A solid, typically transparent. Brittle and used in windows. The first patent granted in the UK was for Glass.

weight - A measure of the force applied on an object by gravity. Measured metric in grams and kilos or imperial in lbs and oz

Weight - a measurement of how heavy an object appears due to the pull of gravity. For example the weight of an object on planet earth will be different to the weight of the object on the moon

LED - Light Emitting Diode. A bulb that is very efficient at producing light. Often small.

Voltage - A measurement of volts.

Memory - A way to describe the way in which the brain can remember things.

Rechargeable - Something that can be charged back to its original state, e.g. batteries.

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