[78570] CHF 1100.00 [78579] CHF 1200.00 [78170] CHF 4900.00 [78179] CHF 5300.00 Solid stainless steel case Screw-down crowns and pushers Non-reflective sapphire cristals Classic Automatic (78170, 78179) Certified chronometer with turned gold counterweight, self-winding Valjoux™ 7751/25-jewel movement 18K solid gold bezel Moonphase 12-hr. chronometer with sweep second hand, 30 min. and 12-hr. indicators 24-hr. AM/PM indicator Day and month windows on dial Date hand indicator on outer dial Solid stainless steel bracelet with 18K solid gold links, solid stainless steel end pieces and diver's clasp or Hirsch¬ alligator strap with stainless buckle Case size: 41.5mm Classic Quartz (78570, 78579) ETA Swiss chronograph, 27-jewel movement 10 microns of 18K gold-plating on bezel and bracelet Sweep second hand, 1/10 sec., elapsed 60 min., 12-hr. indicators Date display Tachymeter on flange Solid stainless steel link bracelet, solid end pieces, with diver's clasp or Hirsch® full grain leather strap Case size: 39mm