Came-TV PT575AR (PT575-AR, PT575/AR, P/T575AR, P T575AR) HMI Fresnel Light 575W Electronic Ballast + Dimmable Free Case.
It comes with one pcs free original bulb(made in China), but the bulb made in china will have a little noise in the head.
And the OSRAM bulb do not have noise in the head, and could hot re-strick, if you want OSRAM bulb instead, it need add extra USD136 for OSRAM bulb.
HMI lamp , G22 Bulbs base
Dimmable EB Ballast