Citizen Promaster Altichron Watch – Altimeter & Eco-Drive Compass

The Promaster Altichron is an adventure watch designed for outdoor expeditions. It combines the functions of an altimeter (from -300 m to 10,000 m) and an electronic compass, all with an analog display. Powered by Eco-Drive technology, it recharges using light, eliminating the need to change a battery.

Its robust case (46.7 mm in diameter, approximately 16.4 mm thick) and water resistance up to 200 m make it a reliable tool in extreme conditions. Whether climbing a mountain or navigating unfamiliar terrain, the Altichron is made for those who want a practical and structured watch.

Technical specifications

• Movement: Eco-Drive J280, powered by light

• Functions: altimeter (−300 m to 10,000 m), electronic compass, date

• Case: steel or titanium, sometimes with DLC coating

• Diameter: ~ 46.7 mm

• Thickness: approx. 16.4 mm

• Water resistance: 200 m / 20 ATM

• Bracelet: nylon or rubber depending on the version

• Glass: sapphire/crystal with anti-reflective coating depending on the version