{"product_id":"nivada-grenchen-f77-mk2-38mm-open-heart-aventurine-dial-titanium-mens-automatic-watch-68051a77","title":"Nivada Grenchen F77 MK2 38mm Open Heart Aventurine Dial Titanium Mens Automatic Watch 68051A77","description":"\u003cp\u003eThe Nivada Grenchen F77 MK II Titanium Open Heart Green Aventurine 68051A77 is a Swiss automatic watch featuring a 38mm Grade 5 titanium case, a natural green aventurine dial and an integrated titanium bracelet. Its distinctive octagonal bezel is secured by eight screws and complements the case’s combination of vertical brushing and polished surfaces. The green stone dial features applied titanium-coloured indexes, luminous hands and an open-heart aperture at six o’clock, revealing the movement’s balance wheel. With an 11.60mm thickness when fitted with the see-through caseback, a 46.2mm lug-to-lug measurement and water resistance rated at 100 metres, the watch combines mechanical detail with lightweight titanium construction.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eNatural Green Aventurine Dial and Open-Heart Design\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe dial features natural green aventurine, whose shimmering mineral texture creates variation across its surface. Applied titanium-coloured indexes mark the hours, complemented by white Super-LumiNova dots around the dial perimeter. Titanium-coloured hands filled with white Super-LumiNova maintain contrast against the green background, while the embossed Nivada Grenchen logo and white dial printing complete the display. The opening at six o’clock exposes the moving balance wheel, bringing the mechanical operation into view without a separate date display.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSwiss Automatic Movement and Exhibition Caseback\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe F77 MK II is powered by the Swiss Soprod M100BV automatic movement, operating at 28,800 vibrations per hour, or 4Hz, with 25 jewels and a 42-hour power reserve. The movement drives the central hour and minute hands alongside the sweeping seconds hand, while the exposed balance wheel provides a view of its operation through the dial. A see-through flat sapphire caseback reveals the movement from the reverse, extending the watch’s mechanical presentation beyond the open-heart aperture.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eGrade 5 Titanium Case and Integrated Bracelet\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe 38mm case is crafted from Grade 5 titanium with vertically brushed and polished surfaces. Its octagonal bezel features eight screws, while drilled lugs allow for strap changes. A double-domed sapphire crystal with anti-reflective coating protects the dial. The integrated Grade 5 titanium bracelet features a vertically brushed finish and tapers from 22mm at the case to 16mm at the clasp. With its 46.2mm lug-to-lug measurement, 11.60mm thickness with the see-through caseback and water resistance rated at 100 metres, the F77 MK II combines a distinctive stone dial with carefully finished titanium construction.\u003c\/p\u003e","brand":"Nivada Grenchen","offers":[{"title":"Default Title","offer_id":55472185999701,"sku":"68051A77","price":12933.0,"currency_code":"RON","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0951\/3720\/2517\/files\/image492293226.jpg?v=1792660182","url":"https:\/\/witchnition.com\/en-ro\/products\/nivada-grenchen-f77-mk2-38mm-open-heart-aventurine-dial-titanium-mens-automatic-watch-68051a77","provider":"WatchNation","version":"1.0","type":"link"}