It was Frederique Constant in 1994 that developed the very first Heart Beat watch, showing the mechanical movement and thereby setting a trend throughout the horological industry. These new timepieces incorporate specific codes that enhance their unique character and extreme simplicity, with thin polished baton-type hour markers, along with a supremely pure dial, either dark grey or silver. The overall design of the new Slimline Auto Heart Beats make them light, both visually and physically.
Source: Europa Star March/April 2016 Magazine Issue