The details

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Verified catalogue information, practical sizing guidance and the details that help you decide.

Introduced in 1969, the Seiko Speedtimer was a major innovation milestone – the world’s first automatic chronograph watch with column wheel and vertical clutch, still prerequisite in high functionality chronographs for accurately measuring elapsed time. The hard-coated bezel features a tachymeter speed measurement tool. Under dual-curved sapphire glass, the sub dials contrast the black dial for legibility with a different finish. Powered by the in-house 8R48 mechanical chronograph calibre, this movement allows accurate measurement of elapsed time by combining a vertical clutch and a column wheel in a 49.5 mm lug to lug, 42mm diameter case size. The 8R watch movement series has been designed by Seiko for maximum precision with 3 key elements: 1) The Vertical clutch – eliminates shuddering or jumping of the hands when the start/stop button is pushed, enhancing the chronograph’s accuracy and durability 2) The Column wheel – resembles the top of a castle turret, ensures precise control of chronograph operation 3) The 3-pointed hammer – ensures that when the re-set pusher is pressed, all hands return to zero instantly, in perfect synchronisation for high durability 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. This men's watch is listed with current price and availability for each purchasable option and is shown in Black. Review the product images, specifications and current availability on this page before ordering.

• The hard-coated bezel features a tachymeter speed measurement tool.
• Under dual-curved sapphire glass, the sub dials contrast the black dial for legibility with a different finish.
• This men's watch is listed with current price and availability for each purchasable option and is shown in Black.
• Review the product images, specifications and current availability on this page before ordering.
• Chronographs selected from Seiko Prospex's current catalogue

Product type

Chronographs

Condition

new

Colours

1

Sizes listed

Not sized

Reference

FH-P-B16AC346BB43