Seiko japanese quartz analog/digital h023(battery powered) movement. Alarm world time hand indicator world time display in a digital format with scrolling major world cities . Solid 316l stainless steel combination satin/polished finish gold electroplated accents case. Bi-Directional Rotating Bezel can be used as slide rule for a wide variety of calculations and conversions used by pilots and handy for anyone. World time with city name and time difference display; daylight saving adjustment and time transfer function Chronograph records elapsed time up to 100 hours in 1/000 seconds 12 or 24 Hour Time Month; day and date World time alarm Hour; minute and second hands Second hand always synchronized with digital display Hourly time signal capability Fully automatic (perpetual) calendar Water-tested to 100 meters (suitable for showering; swimming and snorkeling) Stainless bracelet with gold-tone accents and double locking push-button safety clasp Stainless Steel case with gold-tone accents Screw-down caseback Sapphire Hardlex Crystal is scratch-resistant 45mm  3 Year SEIKO warranty