Prospex Speedtimer Mechanical Chronograph 1969 Re-Interpretation

The Speedtimer Prospex watch collection represents Seiko’s professional timekeeping heritage.This particular design is inspired by two 1969 models – the world’s first automatic chronographs with a column wheel and vertical clutch. – but features new innovations, including high contrast dial and subdial colours for legibility and the 8R calibre.Becoming official timekeeper for Tokyo’s high profile international sports event in 1964 was a turning point in Seiko’s history. Making precisely accurate professional timing instruments, with no prior experience, resulted in the Seiko Watch Corporation design code of visibility, legibility and functionality.Prospex is a combination of the words ‘Professional’ and ‘Specifications.’ These timepieces are designed to be practical, reliable and durable within extreme or everyday environments, for experts, sports lovers and adventure seekers alike. MovementAccuracy: -15/+25 seconds per dayCalibre: 8R46Movement Type: Automatic with Manual WindingPower Reserve: 45 Hours|||ExteriorDial Colour: BlueLumiBrite: Lumibrite on hands and indexesCase Material: Stainless steel (super-hard coating)Strap/Bracelet: Stainless steelClasp: Three-fold clasp with push button releaseCase Diameter: 42.5mmCase Thickness: 15.09mmCase Length: 50.0mmLug Width: 20.0mm|||Other SpecificationsWater Resistance: 10 barCrystal Coating: Anti-reflective coating on inner surfaceCrystal Type: Dual-curved sapphire crystalOther Specifications: See-through case backWatch Function: Equipped with small seconds hand, Stop seconds hand function