Seiko 7A28-701A Ok it's quartz, no apologies from me on that score. A little piece of watch history in that on its' introduction in 1982/3 it was the first quartz watch with a full analogue display and ran on a massive fifteen jewel count with each function on its own motor and no plastics involved. Accuracy is so good that the British forces issued them followed by several other countries, at the moment I reckon I would need to give it a few weeks to possibly see any variation in timekeeping. As you can see it's no spring chicken but it will sure do for pottering in the garden - sorry if you all already know the foregoing