{"product_id":"sinn-instrument-657-s-watch-657020-leather-strap-sn-136","title":"Sinn Instrument 657 S D","description":"\u003cp\u003e\u003cstrong\u003eSinn Instrument 657 S 657.020 Leather Strap\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe Sinn Instrument 657 S \u003cstrong\u003e657.020 Leather Strap\u003c\/strong\u003e is a Swiss-made pilot watch designed for precision, durability, and enhanced readability. Powered by the ETA 2824-2 automatic movement, this luxury instrument watch operates at 28,800 vibrations per hour with 25 jewels, ensuring reliable timekeeping. As part of the advanced 657 series, it offers robust engineering and professional-grade performance.\u003c\/p\u003e\u003cp\u003eThe Sinn Instrument 657 S \u003cstrong\u003e657.020 Leather Strap\u003c\/strong\u003e features a stainless steel case with a captive pilot’s bezel for accurate elapsed time measurement. The dial includes luminous hands and markers for clear visibility, along with a date window positioned between 4 and 5 o’clock. Magnetic field protection ensures reliability in demanding environments, while sapphire crystal with anti-reflective coating protects the dial. The leather strap adds a refined and comfortable finish.\u003c\/p\u003e\u003cp\u003eThis Swiss-made automatic pilot watch is ideal for professionals and enthusiasts seeking a reliable and functional timepiece. Suitable for aviation use and daily wear, it combines durability with classic styling. The Sinn Instrument 657 S \u003cstrong\u003e657.020 Leather Strap\u003c\/strong\u003e delivers precision and reliability.\u003c\/p\u003e","brand":"Archive","offers":[{"title":"Default \/ Black","offer_id":53718151364949,"sku":"SIN-136","price":1065.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0886\/3996\/3477\/files\/sinn-instrument-657-s-d-657-020-leather-strap-image-1.jpg?v=1777460975","url":"https:\/\/www.clarindon.co.uk\/products\/sinn-instrument-657-s-watch-657020-leather-strap-sn-136","provider":"Clarindon Jewellers","version":"1.0","type":"link"}