I wear a Casio G-Shock G-7900 every day. It has four alarms, two stopwatches and a countdown timer.
All useful for waking me up, tracking the length of jobs, reminding me of things to do. Date and day (sometimes need reminding), tide graph (personal, for fishing coastal areas) and can be frozen then boiled.
It is extremely tough. Withstands all weather, dust, mud, scrapes and knocks.
It is quite chunky but I've never had it snag. A slimmer model that can withstand the same punishment is the Mudman G-Shock. Not sure of it's features but I know someone who has worn it every day doing the same work with no problems.
Just prepare yourself for all staff on site to always ask you the time constantly
