SRQ055J1
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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 durability2) The Column wheel - resembles the top of a castle turret, ensures precise control of chronograph operation3) The 3-pointed hammer - ensures that when the re-set pusher is pressed, all hands return to zero instantly, in perfect synchronisation for high durabilityProspex 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.
Seiko Prospex Speedtimer 8R Mechanical Chronograph
MOVEMENT TYPE: Mechanical
MOVEMENT CALIBRE: 8R48
BAND TYPE: Stainless Steel Bracelet
CLASP TYPE: Z-Clasp
DIAL COLOUR: Black
WATER RESISTANCE (Metres): 100
CASE WIDTH: 42mm
CASE DEPTH: 14.6mm
GLASS TYPE: Sapphire Crystal
DATE FUNCTION: Date Only
STONE TYPE: