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Got a Casio Pathfinder for Xmas, which is essentially a G-shock with sensor capabilities.
This watch is/has:
Solar Powered (5 month reserve)
Atomic Time
200m Water Resistant
Moon Age and Moon Phase graph
Tide Graph
Altimeter
Barometer (with chart to track patterns)
Thermometer
Digital Compass
Plus all the normal watch things
It's pretty fucking awesome. Ugly as sin, but an amazing tool for my hiking and general adventuring..