The Casio G‑Shock Mudmaster GWG‑2000‑1A5ER is a 54 mm analog‑digital watch that tracks altitude, barometric pressure, compass direction and temperature. Its sapphire crystal face resists scratches while the khaki resin strap stays comfortable under any conditions. Bluetooth syncs data to your phone, and its 20‑bar water resistance lets you explore wet environments with confidence.