Testarossa What is this?

It’s an embiganator. You dial in your magnification factor and hey presto!

That or it’s the clock. ⏰

 

I thought it was a lap timer.

 

That as well. Mine always reads Flashing zeros as I isolate the battery at the end of every drive and am always 1/2 a mile from home before I realise I didn't set it!

https://www.manualslib.com/manual/466989/Ferrari-Testarossa.html?page=27#manual

 

I think mark and newman are right: it is a clock and a lap timer or stopwatch

that is normal when disconnecting the battery

 

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It's annoying to remember how/which A-B-C buttons to push to get it to do what you want -- see your TR OM.

 

At the dealer it confused everyone. For some reason I always remembered it so sales and service both, anytime a clock needed to be set I was called. I can still do it in my sleep.

But doing it to the microwave? Still requires experimentation.