This is the Baume & Mercier Promesse timepiece, reference number M0A10163.
The watch comes with a 30 mm stainless steel case that boasts transparent sapphire crystal back and 18K rose gold-plated bezel. The case is presented on a matching stainless steel bracelet with 18K rose gold-plated inserts, secured on the wrist with a triple folding clasp with security push-pieces. This model is equipped with the ETA 2671 movement that contains 21 jewels and works at a frequency of 4 Hz (28,800 vibrations per hour). The movement is wound automatically and builds up power reserve of 38 hours. The silver dial with Roman numerals and diamond hour-markers features central hours, minutes and seconds. The watch is water-resistant to 50 meters.
This timepiece is offered in an unworn condition and includes the manufacturer’s box and papers.