The Eberhard & Co Extra-Fort Grande Taille 31956 CP is a mechanical automatic chronograph featuring a column wheel mechanism. It has a 41mm stainless steel case with a polished finish, complemented by a domed, anti-reflective sapphire crystal. The watch is water-resistant up to 50 meters and includes a blue dial paired with a matching blue leather strap. The case back is secured by six screws and features engravings. Functions include hours, minutes, chronograph, date, and small seconds. Reference number: 31956 CP.