Sinn Ux Hydro. Oil filled case with certifed chronometer quartz movement. Super legible dial and dead accurate. Watch is in outstanding condition. Case, bezel, and bracelet are mark free. Minor scuffs to ar only seen at certain angle. Lights scuffs on clasp. Warranty card stamped new in 2009 so plenty of battery life left. Has box, papers, tool. $1300 shipped. Pm for pics please.