you will notice that I wind all my watches daily. However, I can appreciate Mike's predicament should he be away from home and prefers not to take his 5270G with him. The watch is a manual perpetual calendar chronograph! A manual perpetual calendar has the disadvantage of having to be wound every two days at least unlike the majority of perpetual calendars that are automatic and can be left on a winder. I am most curious how many owners of manual perpetual chronographs like the 3970,5970 and 5270 wind their watches daily or every two days to keep the perpetual calendar and moonphase accurate.