Renata LR44 1.5V Alkaline Button Cell X2

CMOS - Complementary metal oxide semiconductor

LED - Light Emitting Diode - a small light source

Diameter - A measurement across a circle passing through the middle

Battery - A device used for the storage of electricity

Button - A round or square object used for fastening clothing or other items

button - A small fastener used on clothing to secure two pieces of fabric together.

Small - something that takes up less space than normal.

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

Popular - Something that is admired and liked by many people.

Alkaline - Something that has a greater pH greater than 7.

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