You still need to understand what you are selling, like in a very deep sense. Even if not at the technical levels, you need to understand how the financials of it all works, how to take product and sales roadmap forward. How to hire, fire, how to spend and on what to spend.

All this involves understanding the product in a very deep way, and a good deal of technical details as well. Else your staff will play you like a violin.

Absolute hands off abstract management by words won't cut it anywhere.