Seiko ASTRON SSJ003J1 Blue dial with a date window at the 3 o'clock position. Blue ceramic bezel set on a 39 mm stainless steel case. Sapphire crystal on top and a solid case-back. Water resistant to 100M. Stainless steel bracelet with a triple-fodling deployment clasp. Movement Caliber Number 3X22 Movement Type GPS solar Precision ±15 seconds per month (without receiving a GPS signal and at temperatures between 5°C and 35°C ) Jewels 8 Functions Overcharge prevention function Power save function Perpetual calendar to the February 28, 2100 GPS signal reception function (Time zone adjustment, automatic time adjustment, manual time adjustment) Reception result display function Function to prevent the GPS signal reception (in-flight mode) Automatic hand position alignment function Case/Band Case Material Stainless steel (super hard coating) with ceramic bezel Case Size Thickness: 11.0mm Diameter: 39.0mm Lug-to-lug: 46.2mm Crystal 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 21mm Other Details Water Resistance 10 bar Weight 144.0g Features Screw case back Clasp with Smart Adjuster function
