SRM users

Anyone know what the actual weight of this product is (amateur v)?

The web site claims 620g for what I assume is both cranks, powermeter and chainrings. If you add 180g for a BB it would total 800g. DA 10 is 740g incl integrated BB so it’s close in weight. This does not sound right to me or is it?

Any SRM users - comments about the product would be appreciated. I am thinking of buying.

Thanks