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Solar-assisted Casio Rangeman watch is a legit lifesaver

For all of their useful functionality, GPS watches are a finite resource for lovers of the great outdoors.

The ability to aimlessly ramble, while pinpointing your exact whereabouts, is limited by the immense drain GPS has on battery life. The positioning tech giveth, yet it also taketh away all too quickly.

Casio thinks it has a solution for wanderlust-ing explorers within its newly-announced Casio G-Shock Rangeman GPR B-1000, announced at CES 2018.

The timepiece, which has its own GPS system built-in, includes solar charging capabilities. However, you’ll need four hours of sunshine to generate an hour’s worth of GPS battery life.

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Taking the watch off and laying it flat for all that time might sound like a lot of effort for not a whole lot of gain. However, if you’re lost, that hour of power should be enough to get you back on track.

Thankfully, you’re going to have to be on a major expedition to require such an emergency measure. The Rangeman can continuously log your location for 33 straight hours before requiring a dose of sunlight.

The new model also includes wireless charging for the first time in the G-Shock range, which will bring the watch back to full strength in five hours.

The survivalist watch is designed to work in extreme conditions and can withstand underwater depths of 200m and temperatures as low as -4 degrees Fahrenheit.

It arrives in April and will cost a pretty penny at $800 (around £590).

Elsewhere, Casio revealed a limited edition of its Android Wear 2.0 watch, the WSD-F20. The WSD-F20WE will arrive in a run of just 1,500 and become available this spring.

It features a fluorite white colourway, as well as a new ‘Journey’ watch face that shows a map of the current location behind the analogue display.

What has been your favorite announcement of CES 2018 thus far? Drop us a line @TrustedReviews on Twitter.

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