the one in the picture looks like hps.
if they are close to you, why dont you just go down and see.
not many light systems come with just a mh bulb.
usually they come with a hps, OR hps and mh. not to often it is just mh
lol its also a dual spectrum bulb so that means you dont need to use mh for veg and hps for flower , closest thing to real sunlight for plants im gettin mine at the end of the month.
its all right, if going with 600w temps will be hard to control with out lens,if close to crop .dual spectrum seems to give popcorn buds light and fluffy