Rangeman

Casio’s Rangeman is the sensor-equipped, outdoor-minded branch of G-Shock, built around getting useful information onto your wrist without surrendering shock resistance. But the name spans markedly different watches: the button-driven GW-9400, the GPS-navigation-focused GPR-B1000, and the heart-rate-equipped GPR-H1000 each take that brief somewhere different.

Introduced in 2013, the GW-9400 established the family with an altimeter, barometer and compass, plus Tough Solar power and radio-controlled timekeeping. Its dedicated sensor button and segmented digital display keep the experience distinctly traditional G-Shock. The much larger GPR-B1000, introduced in 2018, added GPS navigation and a ceramic case back that accommodates wireless charging; solar charging supplements its rechargeable battery. That generation is about recording a route and finding your way back, rather than simply taking a bearing.

The GPR-H1000 arrived in 2024 with GPS, an optical heart-rate sensor and a stronger emphasis on activity tracking. USB charging and solar assistance support a different power arrangement from the GW-9400’s solar-only system. Its higher-resolution display also changes the character of the watch: workout data and navigation through menus take precedence over the older model’s fixed display layout.