sport watches for women with built-in heart rate sensors and GPS -Seiko Prospex Speedtimer Men's 39mm Stainess Steel Solar Chronograph Watch SSC813P

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The Seiko Prospex Speedtimer series is inspired by the Speedtimer calibre 6139, released in 1969 off the back of a decade of International Sports Timing recognition. Powered by Solar V192 calibre, the series offers 24hr indicator, 60 minute chronograph & a power reserve function.