SSH155 Seiko Astron Movement Caliber Number 5X83 Movement Type GPS solar Precision ±15 seconds per month (without receiving a GPS signal and at temperatures between 5°C and 35°C ) Power reserve Operating for approx. 6 months (when fully charged), power save: approx. 2 years Jewels 14 Functions Overcharge prevention function Power save function Chronograph up to 12 hours in 1/20 second increments Perpetual calendar to the february 28, 2100 World time function (38 cities) Dual-time function Day display Power reserve indicator Time transfer function (Switching between the main-dial and sub-dial) GPS signal reception function (Time zone adjustment, automatic time adjustment, manual time adjustment) Satellite acquisition status display function Reception result display function DST (Daylight Saving Time) Function to prevent the GPS signal reception (in-flight mode) Automatic hand position alignment function Case/Band Case Size Thickness:13.4mm Diameter:43.3mm Lug-to-lug:49.5mm Crystal Dual-curved sapphire crystal Crystal Coating Super-clear coating LumiBrite LumiBrite on hands and index(es) Clasp Three-fold clasp with push button release Distance between lugs 14 Other Details Water Resistance 10 bar Magnetic Resistance 4,800 A/m Weight 117.0g Features Allergy-safe metal Screw case back
