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A mechanical model with a countdown timer
bearing the name “SPEEDTIMER” is now available.

  • Photo of SPB513 SEIKO PROSPEX Dial Ring

    Dial Ring

    By operating the 4 o'clock crown, a countdown timer function can be used to measure key intervals in motorsports competitions as well as daily uses, such as the time remaining. Despite its compact, comfortable size, it achieves high reliability and durability.

  • Photo of SPB513 SEIKO PROSPEX Dial

    Dial

    The orange accent that appears on the dial ring is also used for the seconds hand to enhance legibility during instantaneous measurements. The seconds markers evoke a mechanical heartbeat and express classical beauty.

  • Photo of SPB513 SEIKO PROSPEX Bracelet

    Bracelet

    The streamlined case design and the elegant style of the bracelet inherit the characteristic design of a Speedtimer chronograph introduced in 1972, further emphasizing the ‘70s vintage aesthetic. The multi-row bracelet allows the watch to sit securely and comfortably on the wrist.

SEIKO PROSPEXSPEEDTIMER
Mechanical

  • Photo of SPB513 SEIKO PROSPEX Photo of SPB513 SEIKO PROSPEX

    SPB513

    [ Caliber 6R55 ]

    Available in September 2025

    Specifications

  • Photo of SPB515 SEIKO PROSPEX Photo of SPB515 SEIKO PROSPEX

    SPB515

    [ Caliber 6R55 ]

    Available in September 2025

    Specifications