Citizen Promaster Sky Radio Controlled AT8300-58E

The Citizen Promaster Sky AT8300-58E is a high-performance pilot's watch that challenges the standard for instrumental timepieces by integrating a full suite of aviation features into a compact 41mm case. Constructed from durable stainless steel, it features an internal slide rule bezel—operated by a dedicated crown at the 8 o'clock position—for flight-related calculations such as fuel consumption and tank capacity. Powered by the in-house Eco-Drive Calibre H800, it utilizes any light source for energy and features Radio-Controlled atomic timekeeping for precise synchronization across Europe, Japan, the USA, and China. The black dial is protected by an anti-reflective sapphire crystal and includes a 1/20-second chronograph and world time for 26 cities.