Rating : - Best most reliable mechanical chronograph ever!
I bought my Omega Speedmaster back in 1971 for about $160. Best watch I've ever owned. I used it for over 30 years on a daily basis as a stopwatch to set up,calibrate and optimize laboratory research systems. On any given day, I'd use it in this capacity maybe 5 times a day in various locations in my job as an Analytical Field Engineer-consultant. I must have set up,tested,calibrated and optimized well over 1000 research laboratories around the world.-Always using this watch as my essential timer.

In all those years, I've had it attended to only twice. Always by a certified,authorized Omega jeweler. DO NOT EVER use unauthorized jewelers to work on this watch - most of them have never seen this watch until they get their hands on yours, and they don't have a clue what to do and how to do it. If you own such a wonderful chronograph, make certain you use authentic parts and an authentic Omega certified jeweler.

The first time for a replacement watch band - wore out the original- got one - an authentic metal watchband - from Omega along with a complimentary mechanical inspection, cleaning, and calibration.

Second time, about 5 years ago, the start button return spring broke, - after being pushed about 13,000 times by me. - took it to Omega certified repair station. They did a complete overhaul,repair and cleaning for a few hundred bucks. Good as new.

As a chronograph, this watch ALWAYS kept excellent time. A real work horse, and it beats out all my other various Rolex's and other Omega's.

I can't stand quartz,battery powered watches. This Omega and I have a symbiotic relationship. The agreement is, I wind the watch,and the watch tells me what time it is -accurately and consistently.

Only thing is I wish I had one of those "Made it to Moon" engraved backs on it. Perhaps Omega would consider providing me one?
If I were to buy another Omega Speedmaster- considering it for my sons, I'd be sure to purchase only an Omega Speedmaster with the engraved back casing that says - Made it to the Moon- AND I'd be sure to get the sapphire crystal not the cheap helite plastic one. And I'd be certain to get the authentic Omega metal band with locking clasp.

OMEGA, how about it, offer me a new engraved back case in return for my 40 years of use of your wonderful product.

My favorite watch, my sons favorite watch. What else can I say? I luv it!!!!!!!!!!

You buy this watch, you get a battery-free, heirloom! Use it daily and pass it down to future generations. When someone of your future progeny is stuck in a battery-less environment then he/she will be the only person in the group who will know what the accurate time is. So long as they regularly wind the watch. I'd wind mine every morning as I awoke.