Power reserve and Test Procedure for measuring power

Hi Folks,

I have been testing my 2 new omega watches and both fall short of power reserve.

Both watches are automatic ( Mark II RIO and Deville ).

I strictly test the power reserve when I manually wind these watches . Both are wound by rotating the crown 50 turns clock wise.

mark II was tested by omega boutique and I was informed it get the 48 hour power reserve however ,

when I test the Mark II by manually winding it , it lasts for 34 hours. Deville gave me 20 hours.

mark II is rated for 48 hrs and Devil BigDate for 38. Though both are short on power.

question : what is the right procedure for the test here? Should I wear the watch full day and manually wind it to test the full power reserve ?

as mentioned earlier , I only test when manually wound for 50 turns , watch seated right after.

Goal is to ensure power stays on for at least 48 hours as promised by Omega.

50 turns probably isn’t enough. I’ve had watches that require far more than that.

Why 50 turns? Wind it until the crown won’t turn anymore, then see how long it lasts.

Oops! True!

Here's another way to think about it. YMMV. With a specified 48-hour reserve, the best you can expect is to be able to skip a day. Skipping two days would exceed 48 hours. So wear the watch as you normally would, take it off implausibly eary (say 6:00pm), leave it for a day, and see if it's still running implausibly late the following morning (maybe 12:00 noon?). If so, you're good to go.