Is the Mudmaster GG-B100X good for hiking?

Yes. The compass, altimeter/barometer and thermometer give trail data at a glance, and the mud-resistant case handles dirt and rain.

Does it work without a phone?

Yes. All sensors, timekeeping and alarms run on the watch. Bluetooth only adds syncing and easier settings.

It adds Quad Sensor, Bluetooth and a carbon-reinforced mud-resistant case. In return it is larger, heavier and more complex to operate.

It is rated to 200 m water resistance, so swimming and snorkeling are fine. Casio does not rate it for scuba diving.

The watch, a charging cable for its solar-assisted power system and the manual. No extra straps are included.

Yes. The analog hands and digital display have illumination, so you can read time and sensor modes in the dark.

At Watchspree, for $287.55, 32% under what the other stores charge, as of our latest check.

8 stores we checked sell it, including CreationWatches.com, Watchspree, eBay, Walmart, Hamilton Jewelers.

$287.55at WatchspreeChecked Nov 3

32% under what the other stores charge

Compared across 8 stores. Prices are checked against each store and labelled with when.