Seiko Astron x GPS Solar ft. New Future Men Formal Hexagon 100m Water Resistant Watch SSJ015J1 SSJ015 SSJ-015 SSJ-015J1 Command attention with the all-black Seiko Astron GPS Solar, powered by the advanced Caliber 3X62 movement for ultra-fast GPS time sync and one-touch time zone adjustment. Featuring a lightweight titanium case/bracelet with scratch-resistant coating, plus a multifunction subdial to monitor power, GPS status, and flight mode. A perfect fusion of bold style and cutting-edge satellite technology. Caliber Number / Movement 3X62 (solar powered) Power Reserve / Accuracy Approximately 6 months when fully charged (+/-15 seconds per month without GPS signal) Crystal Sapphire crystal (super-clear coating) Luminous LumiBrite on hands and indexes Case / Band Material Titanium (super-hard coating) case with titanium band (three-fold clasp with push-button release, smart adjuster function) Water Resistance 100m / 10 bar Case Size Thickness: 12.0 mm Diameter: 41.2 mm Length: 48.5 mm Lug width: Integrated Other Specifications Seiko Astron x GPS Solar ft. New Future Made in Japan Allergy-safe metal Screw case back Perpetual calendar (to 28 February 2100) Power reserve indicator Overcharge prevention function Power saving function (hands stop to save power when left in the dark) Automatic hand position alignment function Date display Regular timekeeping (analog display) GPS Function GPS signal reception function (time zone adjustment, automatic time adjustment, manual time adjustment) Reception result display function Satellite acquisition status display function Function to prevent the GPS signal reception (in-flight mode)