Case material: Gold Steel; Charge: Automatic; Conditions: New Presentation condition : With boxes and all papers; Model: Daytona Price on request Gmtbroker Reference: 116523BlackDiamond Rolex 116523 Black Diamond Complete Details: Polished stainless steel case. Polished 18kt yellow gold fixed bezel ring with Tachymeter scale. Polished 18kt yellow gold screw-down locking crown & chronograph buttons. Bracelet & buckle features: Brushed stainless steel outer links & polished 18kt yellow gold center links. Oysterlock double-locking deployant clasp Fitted with the patented Easylink 5mm extension link. Dial: Black dial. Black sub-dials. 8 Diamond hour markers. Fine printed minute/seconds & fractions of a second track. Polished yellow gold hands. Chronograph/Stop watch function: Large central seconds counter hand - accurate up to 1/8th of a second. 30 minute counter sub-dial located at the 3 o'clock position. 12 hour counter sub-dial located at the 9 o'clock position. Continuous running small seconds hand sub-dial located at the 6 o'clock position. Rolex in-house calibre 4130, beats at 28,800 vph, composed out of 290 parts, contains 44 Jewels & has an approximate power reserve of 72 running the time only or 66 hours with the chronograph function running. Featured Complications: Chronograph This watch is also known as 116523BlackDiamond