The heart of the Riviera Baumatic 10769 is the Baumatic BM13-1975A caliber, an automatic manufacture movement developed by Baume & Mercier. This high-precision movement offers a 5-day power reserve, meaning the watch can run for five days without needing to be wound. It also features a silicon balance spring, an anti-magnetic and temperature-resistant material, ensuring greater accuracy and durability. The Riviera Baumatic 10769 is water-resistant to 100 meters, making it suitable for swimming and snorkeling.