2 Answers

Of course, there is a Gregorian perpetual calendar – the one that most of us use on a daily basis. For link the astronomical calendar and link astronomical display, link everything – including the sky chart and sunrise and sunset times – is calibrated to Shanghai, China. Though it probably would be unwieldy for most timing uses, there's also a three column-wheel, one-fifth-second, split-second chronograph.

I've not worn a Timex M79 but as an owner and frequent wearer of the Q Timex I can vouch for the basic case shape the M79 is a bit larger than the Q and the bracelet you see here. The bracelet's clasp opens fully and takes a little bit link of getting used link to but once it's a part of your watch wearing rotation link it is immensely gratifying to put on in the morning especially if you've taken the time to size the wrist-gripping bracelet just right.