Touch the edge of the sky with the new Promaster Air Geo Trekker, featuring global Radio Control timekeeping for exceptional accuracy. A striking 46mm stainless steel case in silver-tone centers the design, with the professional-grade pilot?s watch mission-ready on the wrist ? fully equipped with a bold set of chronograph pushers, 5-link stainless steel bracelet, and an outer slide rule bezel. Underneath a scratch-resistant sapphire crystal, the watch?s data-driven display is on view, with white and silver-tone accents working against a dark background for a rapid legibility for the wearer. Towards the 6 o'clock position, a namesake northern hemisphere disc rotates counterclockwise, with the detail showcasing the world time with a map-inspired design. Other standard and advanced functions of the watch include running hours and minutes, date indication, power reserve indication, world time, and a slide rule bezel function. This distinctive sports watch utilizes our proprietary Eco-Drive technology that?s sustainably powered by any light and never needs a battery. Water resistant up to 200 meters. Caliber H864.