[product_description]Astron GPS Solar Dual-Time Chronograph. Extending the legacy of the Seiko Astron the world’s first commercially available quartz watch today’s Astron is designed for a new generation of leaders to break through to a new feature with excellence in both innovation and style. Combining solid tailoring with the highest degree of accuracy possible in a wristwatch this exceptional timepiece is equipped with the Seiko’s 5X83 caliber offering both high-speed GPS dual time and time zone adjustment to 39 time zones and a chronograph function that measures elapsed time in 1/20th second increments. The movement also features an AM/PM indicator daylight saving time function power save function perpetual day/date calendar correct to the year 2100 and a time transfer function that allows the user to switch the main time and dual time indications with the push of a button all powered by light energy with no battery change required. Framed by a titanium bezel with a black ceramic tachymeter insert and topped with dual curved sapphire crystal with super-clear coating the black dial displays a distinct texture made possible by improved charging efficiency of the solar cell providing an outstanding contrast to the subdials. In addition to the four subdials laid out vertically for a sporty look a first for Seiko Astron the dial includes a date calendar and LumiBrite hands and markers. Crafted of light and durable titanium with super-hard coating this superb timepiece has a contemporary feel thanks to the sleek lines slim profile and the compact and angular design that seamlessly flows from the case to the bracelet and includes a secure screwdown caseback and tri-fold push button release clasp with smart-adjust function. 10 bar 100M Water Resistant[/product_description][unique_description_1]Caliber 5X83^|Powered by light energy - no battery change required^|Power reserve: approximately 6 months once fully charged^|^|Technology: GPS Solar Chronograph^|Dial Color: Black^|Band: Titanium^|CASE DIAMETER (MM): 43.3^|CASE THICKNESS (MM): 13.4^|CASE LENGHT (MM): 49.5^|CASE MATERIAL: Titanium case with super-hard coating^|CRYSTAL: Dual curved sapphire crystal with super clear coating^|STRAP MATERIAL: Titanium bracelet with super-hard coating^|LUG LENGTH (MM): 14^|WATER RESISTANCE: [/unique_description_1][unique_description_2]Astron GPS Solar Dual Time Chronograph^|High speed GPS time and time zone adjustment (39 time zones)^|Perpetual day and date calendar correct to the year 2100^|1/20 second chronograph with vertical subdial layout^|Dual time indicator and time transfer functions^|DST in-flight mode and power save functions^|AM/ PM and signal reception result indicators^|Ceramic bezel insert with tachymeter^|Black textured dial with contrasting subdials^|LumiBrite hands and markers^|Tri-fold push button release clasp with micro-adjust function^|^|^|^|^|^|