Prospex Speedtimer World Athletics Championships Oregon22 Limited EditionLimited edition of 400Serial number engraved on case back Produced for the 2022 World Athletic ChampionshipsInspired by Seiko's first precision chronographs, developed for international sporting competitions in 1964, and its 1969 introduction of "Speedtimer," the world's first automatic self-winding chronographAutomatic with manual winding capabilityChronograph measures up to 30 minutes of elapsed time in 1/8-second increments

Column wheel and vertical clutch mechanism allows for smooth, stutter-free movement of the chronograph hand while providing longer wear and efficiency, and maintaining the power reserve better during chronograph operationBlack dial patterned to suggest the running track at the legendary Hayward Field, site of WCH Oregon 22, with low-reflection surface and contrasting gray subdials for enhanced legibilityLumiBrite hands and markersSpecially designed pushers and crown for ease of useScrewdown see-through casebackPackaged in a Limited Edition collectors' box

TECHNICAL DATA

CASE DIMENSIONS:
Thickness: 15.1mm
Diameter: 42.5mm
Length: 45.5mmCASE: Stainless steel case with super-hard coatingCRYSTAL MATERIAL: Dual-curved sapphire crystal with anti-reflective coating on the inner surfaceDIAL COLOR: BlackSTRAP: Stainless steel bracelet with super-hard coating
Additional black leather strap

MOVEMENT:
Caliber 8R46
28,800 vibrations per hour
34 jewels
Power reserve: approximately 45 hoursWATER RESISTANCE: 10 bar, 100 meters (330 feet)