Prospex Speedtimer 'Grand Touring' SSC939

Introduced in 1969, the Seiko Speedtimer was a major milestone in chronograph innovation, and marked the beginning of an important decade of the Speedtimer in its prime. The 70s were famed for many things: fashion, music, but also motorsports. Designed under the theme of ‘Classic Motorsports,’ the ‘Grand Touring’ Speedtimer is inspired by, and designed to be reminiscent of, vintage muscle cars that would race down endless highways.

Encased in a navy-blue aluminium bezel and sapphire crystal glass, this chronograph features a clean-cut grey dial, with hour and minute hands that resemble the original Speedtimer from 1969. With 12 spots of Lumibrite, this timepiece is designed to be legible in darker conditions. With a chronograph second scale around the dial ring, this piece also features a Tachymeter on the bezel for measuring speed – an iconic element of the original Seiko Speedtimer.

Featuring a solar-powered V192, this Speedtimer chronograph is accurate to +/- 15 seconds per month, whilst maintaining a full charge of 6 months.

Prospex is a combination of the words ‘Professional’ and ‘Specifications.’ Seiko Prospex timepieces are designed to be practical, reliable and durable; to meet the high standards required in extreme environments for sports lovers and adventure seekers alike.

Movement
Accuracy: -15/+15 seconds per month
Calibre: V192
Movement Type: Solar
Power Reserve: Operating for approx. 6 months (when fully charged)

Exterior
Dial Colour: Grey
LumiBrite: Lumibrite on hands and indexes
Case Material: Stainless Steel
Strap/Bracelet: Stainless Steel
Clasp: Three-fold clasp with push button release
Case Diameter: 41.4mm
Case Thickness: 13.0mm
Case Length: 45.9mm
Lug Width: 21.0mm

Other Specifications
Water Resistance: 10 bar
Weight: 164.0g
Crystal Coating: Anti-reflective coating on inner surface
Crystal Type: Curved Sapphire Crystal
Other Specifications: Screw case back, Tachymeter function
Watch Function: 24-hour hand, Chronograph up to 60 minutes in 1/5 second increments, Date display, Equipped with small seconds hand, Overcharge prevention function, Power reserve indicator
Magnetic Resistance: 4,800 A/m