This is an incandescent light bulb, which is one which produces light by heating a filament in an inert gas. It is not fluorescent so is ideal if you don't get on with them.

The R39 is 39mm across the face of the lamp and 70mm tall
The R50 is 50mm across the face of the lamp and 87mm tall
The R64 is 64mm across the face of the lamp and 104mm tall
The R80 is 80mm across the face of the lamp and 118mm tall

The bases are standard Screw and Small Screw

These are dimmable

The rated life is 2000hrs which is approximately 6 months continuous burn time

Also known as:

spot light spotlight mushrooms dartboard lights concentra par 20 par 30 spotone