{"product_id":"seagull-st3621-manual-winding-movement-6-oclock-secondhand","title":"Seagull ST3621 Manual Winding Movement (6 o'clock secondhand)","description":"\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eSeagull ST3621 Manual-Winding Movement (6 O’Clock Small Seconds)\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eSeagull ST3621\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e is a \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003emanual-winding mechanical movement\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e based on the \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eETA\/Unitas 6498-style architecture\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e. Featuring a \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003esmall-seconds display at 6 o’clock\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, it is widely used in larger dress watches, pilot watches, pocket-watch-style builds, and custom hand-wound watch projects.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003e\u003cspan\u003eSpecifications:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eManufacturer:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Tianjin Sea-Gull Watch Group\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eCalibre:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e ST3621 \/ TY3621\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eMovement Type:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Manual-winding mechanical\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eTime Display:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Central hour and minute hands\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eSeconds Display:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Small seconds at 6 o’clock\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eFrequency:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 21,600 vibrations per hour (3 Hz)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eJewels:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 17\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003ePower Reserve:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Approximately 46–48 hours\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eOverall Diameter:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Approximately 37.2 mm\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eMain Plate Diameter:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Approximately 36.6 mm\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eHeight:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Approximately 4.5 mm\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eWinding:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Manual, crown-operated\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eCalendar Function:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e None\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eAccuracy:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Performance varies according to regulation, installation, position, and operating condition\u003cbr\u003e\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cem\u003eSea-Gull, ETA, and Unitas are trademarks of their respective owners. ETA and Unitas are referenced solely to describe the movement architecture; no affiliation, sponsorship, or endorsement is implied.\u003c\/em\u003e\u003c\/strong\u003e\u003c\/p\u003e","brand":"WR Accessories","offers":[{"title":"Default Title","offer_id":43496937652433,"sku":"MV-XL-ST3621-1","price":49.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0589\/6559\/0225\/files\/07_887007e3-990a-4ecd-9fc3-23be12e3b265.jpg?v=1745740994","url":"https:\/\/wraccessories.com\/products\/seagull-st3621-manual-winding-movement-6-oclock-secondhand","provider":"WR Accessories ","version":"1.0","type":"link"}