Seiko Prospex Speedtimer ‘Maximum Precision’ 8R Chronograph Stainless Steel Watch

This Seiko Prospex Speedtimer pays homage to the 1969 innovation of the world’s first automatic chronograph with column wheel and vertical clutch, essential for precise elapsed-time measurement. The black dial features contrasting subdials for clear legibility beneath dual-curved sapphire glass, while a hard-coated bezel includes a tachymeter scale. Powered by the in-house 8R48 mechanical chronograph calibre, the movement incorporates a vertical clutch to prevent hand shudder, a column wheel for precise operation, and a three-pointed hammer for instant, synchronized reset, all within a 42mm case. Finished in super-hard coated stainless steel with a matching bracelet, it offers a 45-hour power reserve, lumibrite hands and indices, and robust Prospex durability for sports and adventure use.