Compatible with the International Standard Atmosphere published by International Civil Aviation Organisation (ICAO). Featuring a sturdy analogue display, this high-performance model maintains time display as its main function, while measuring height as high as 10,000 metres and depth as much as 300 metres below sea level.

Eco-Drive ALTICHRON directly measures the geomagnetism with a built-in magnetic sensor. Direction can be displayed not only together with time, but also displayed even while measuring the altitude at the single push of a button.

Titanium possesses unique characteristics such as lightweight, gentle to the skin and resistant to corrosion. To achieve increased comfort and durability, CITIZEN’s proprietary surface-hardening technology delivers five times the hardness of stainless steel. With superior scratch resistance, this advanced material also maintains its beautiful look and lustre.