Audemars Piguet Royal Oak Offshore 25977

Royal Oak Chrono Tourbillon (SS / Black / Leather Strap) Condition: Brand New, Never Worn Ref Number: 25977ST.OO.D002CR.01 Also Known As: 25977STOOD002CR01 Case Size: 47 mm Gender: Gents Movement: Manual Wind Functions: Hours, Minutes, Tourbillon, Chronograph Power Reserve: 70 Hours Caliber: AP 2889 Watch Materials: Stainless Steel Cadence of Balance: 21,600 v.p.h. Case Back: Transparent (See-Through) Crown: Screw Down Dial Color: Black Dial Band Type: Leather Strap Clasp Type: Deployment Signatures: Audemars Piguet Included Items: Manufacture's Box and Papers Finishing: Elegant case in Stainless Steel housing Tourbillon. Description: Royal Oak Chrono Tourbillon in Stainless Steel has a masculine, no-nonsense appeal. Satin/Brushed finished stainless steel case with polished finished edges & beveled edges. Black "waffle" tapestry design dial. Applied silver toned applied index hour markers & hands with luminescent fill. 1 minute Tourbillon located at the 6 o'clock position. 30 minute chronograph/Stop-Watch function: Central seconds counter & 30 minute sub-dial counter located at the 3 o'clock position. The chronograph function is fitted with titanium lever in the mechanism, thus eliminating the phenomenon of the "jumping chronograph hand" when starting the chronograph function. Small seconds sub-dial at the 9 o'clock position. AP caliber 2889 beats at 21,600 vph & contains 25 jewels with an approximate Power Reserve of 70 hours. The mainplate & bridges are made of Nickel Silver - an alloy which resists oxidations & remains stable over long periods of time. Water resistant to 20 meters / 60 feet