A. Lange & Sohne 403.032 Datograph, 403032, 18k rose gold with an 18k rose gold buckle (deployment available), manual wind, big date, chronograph with flyback function, small seconds between 7 and 9, silver dial with luminous hands and applied rose gold numerals and hour markers, sapphire crystal, water resistant to 3 atm, diameter: 39mm, thickness: 13 mm, display back, Like New with Original Box and European Watch Co. warranty card.This is an 18K rose gold A. Lange & Sohne Datograph, 403.032. It has a leather strap with a matching 18k rose gold buckle. The solid, 39mm diameter three-body case, rounded bezel, and downturned lugs are polished. There are rectangular pushbuttons for the chronograph and flyback function at 2 and 4 o'clock. The dial is silver with rhodium-plated 18K gold hands with luminous inserts and applied 18K rose gold Roman numeral hour and baton markers. It has a scratch-resistant s apphire crystal, and it's water resistant to 30 meters (100 feet). It has a sapphire display case back that's secured with six screws, and a double window big date aperture is at 12 o'clock. A subsidiary silver dial for the small seconds is between 7 and 9 o'clock, and an instantaneous 30-minute register is between 3 and 4 o'clock. There is an outer 1/5 second/minute track with an outermost graduated pulsometer track. The precision flyback function of the chronograph instantly restarts the stopwatch to continuously time an event without needing to pause, reset, and restart. There's a quick correction plunger on the edge of the case at 10 o'clock, and the chronograph's minute hand makes 1-minute jumps for an enhanced accuracy in reading the timing function The 13mm thick case, dial, and movement are all signed.