The Citizen Promaster Eco-Drive BN4048-14X combines impressive performance and everyday reliability. Powered by an Eco-Drive movement, this watch is water resistant up to 20 bar and offers an impressive 11 months of run time from a single charge. It also features an altitude indication and calibration function (-300m to 10,000m), a compass indication and calibration function, and a power reserve indicator. All housed in a stainless steel case with a 46mm diameter and IP Black surface processing.