Picked up this one today - the SGW100 , 35% off so I couldn't resist.
Module number is 3157.
Watch has temp sensor and an electronic compass. Cool.
The lcd segments around the dial are where the electronic compass arrow indicates the direction of north. It's pretty accurate. You can also adjust for magnetic declination.
Nice big digits (not skinny either), time visible in the top row in ALL modes (world time, stopwatch,timer,alarm,compass), 200m, recessed mineral crystal. Pretty loud alarms and signal. And lightweight too. What's not to like?
Only minor quibble is 60minute stopwatch. But countdown timer is 24hr.
I got mine with a nice thick nylon strap - very comfortable and dries very quickly if it gets wet.
If you do any hiking or cycling outdoor trails it's handy to have a compass built into the watch.
I would not hesitate to recommend this watch.