Seiko Prospex Speedtimer Mechanical Chronograph SRQ037

Prospex Speedtimer Mechanical Chronograph. Designed for those who treat life as the ultimate adventure, the Seiko Prospex line meets every challenge with technological excellence and style. Celebrating Seiko's first precision chronographs, developed for international sporting competitions in 1964, as well as its 1969 introduction of the world's first automatic chronograph, this exceptional watch provides chronograph measurement of up to 30 minutes of elapsed time in 1/8-second increments. The 34-jewel automatic movement, visible through the screwdown see-through caseback, beats at a frequency of 28,800 vibrations per hour, with a power reserve of approximately 45 hours and manual winding capability. The proprietary 8R46 movement includes a column wheel and vertical clutch mechanism allowing for smooth, stutter-free movement of the chronograph hand while providing longer wear and efficiency, and maintaining the power reserve better during chronograph operation. Crafted of stainless steel with super-hard coating and tri-fold push button release clasp, this extraordinary timepiece also features a charcoal gray dial with beige LumiBrite hands and markers topped by a dual curved anti-reflective sapphire crystal. 10 bar, 100M Water Resistant

Technical Data

TYPE: Watch

MOVEMENT: Automatic Chronograph

CALIBER: 8R46

DIAL COLOR: Gray

BAND: Stainless Steel

STRAP MATERIAL: Stainless steel bracelet with super-hard coating

CASE THICKNESS: 15.1 mm

CASE MATERIAL: Stainless steel case with super-hard coating

CASE LENGTH: 50.0 mm

CASE SIZE: 42.5 mm

CRYSTAL TYPE: Dual-curved sapphire crystal with anti-reflective coating on the inner surface

WATERPROOF: 10 bar 100 meters (330 feet)

28 800 vibrations per hour

Power reserve: approximately 45 hours

34 jewels

Features

Automatic with manual winding capability

Charcoal gray dial with beige LumiBrite hands and markers

Screwdown see-through caseback

Tri-fold push button release clasp

Chronograph measurement of up to 30 minutes of elapsed time in 1/8-second increments

Proprietary 8R46 movement includes a column wheel and vertical clutch mechanism allowing for smooth, stutter-free movement of the chronograph hand while providing longer wear and efficiency, and maintaining the power reserve better during chronograph operation

Celebrates Seiko's first precision chronographs, developed for international sporting competitions in 1964, as well as its 1969 introduction of the world's first automatic chronograph