Omega

Omega 3861 power reserve: 50 hours

The Omega 3861 is a hand-wound movement that runs for about 50 hours (about 2.1 days) from full.

Found in

Speedmaster Professional Moonwatch

Keeping it running

• Wind it fully once a day, at the same time, until you feel the crown stop. Never force it past that point.
• A full wind lasts about 50 hours, so winding every morning keeps it running with time to spare.
• If it does stop, don't set the date between 9pm and 3am. Here's why.

Never let it stop

Watch Winder counts down the reserve of every watch you own and reminds you before one stops. It already knows the Omega 3861: type your watch's name and the reserve fills itself in.

Manufacturer's published figure. Real reserve varies with the watch's age and service; check your manual.