These LED are DIMMABLE !

There are one type of DIMMABLE LED:

the low Voltage models in 12 Volts

It work from 0% to 100%

Because of the extreme low power of these LEDS, is important to use "ad-hoc" transformer

Exemple : if you put one Dimmable (2.5 Watts) LED on a 50VA electronic transformer, the tranformer will, probably, flick the lamp...
it's better to use 10 Leds on this tranformer or use a little special 3 or 6 VA tranformer...