Seiko Prospex Speedtimer GPS Solar Dual-Time Chronograph. Inspired by Seiko’s association with the measurement of athletic achievement, this exquisite timepiece is part of the first GPS Solar Chronograph Series in the Prospex collection. Showcasing Seiko’s legacy of precision sports timing with the highest degree of accuracy possible in a wristwatch, it is equipped with 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 high precision timepiece 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. The dark gray dial displays four gray subdials as well as yellow accents and a high-contrast white dial ring for enhanced legibility, all framed by a sleek black bezel. Crafted of stainless steel, this exceptional watch also includes a sapphire crystal with super-clear coating, a date calendar, LumiBrite hands and markers, a secure screwdown caseback and tri-fold push button release clasp with smart-adjust function. 10 bar, 100M Water Resistant