Ring Doorbell Wireless 2nd Gen

Hi, I’m moving into a new build property this weekend and there is a doorbell installed but I’m not sure if it a mechanical chime or digital. I can’t reach it as I’m disabled. I think it says Deta which I’ve looked to see and I think it’s mechanical. I’ve ordered from Amazon the following Ring and Chime Have I bought the right kit? I am fine using the ring Chime. I’m just eager to get it all setup. Is there’s specific video that’s shows how to do this install as I’m not paying £90 for Amazon to do the job!!