G-Shocks are rugged, sure, but Casio’s Pro Trek collection is specifically meant for the outdoors. This particular solar-charging Pro Trek PRW-3510Y-8CR features the brand’s digital tech, including altimeter, barometer and compass sensors — truly useful for outdoor pursuits. Meant to withstand the rigors of such activities, its chunky case is 55mm but wears light on the wrist. Right now, it’s available for 50% off for a final price of just $160, and makes a great gift for the active dad.

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