The Osram NAV Super 4Y is dimmable on conventional control gears and electronic control gears. This also has optimum energy efficiency with up to 25 % longer life than standard lamps and is greater reliability than standard lamps.
It took some while because they did not have 1 of the products I ordered in stock. However, after I contacted them they added a slightly different but still good enough product for free. Really pleased with their service, quick response as well