Seiko SRQ055J1 Prospex Speedtimer âMaximum Precisionâ 8R Watch

Name: Seiko SRQ055J1 Prospex Speedtimer âMaximum Precisionâ 8R Watch
Brand: Seiko

Seiko

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.