When you run with a mechanical watch, will it speed up the second hand (I have a Seiko 5 automatic)? - Quora
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Seiko 5 Men's Automatic Watch with Black Dial Analogue Display and Black Fabric Strap SNK809K2 : Seiko: Amazon.co.uk: Fashion
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Seiko Unisex Analogue Quartz Watch with Stainless Steel Bracelet – SNXS79K : Seiko: Amazon.co.uk: Fashion
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