The Hamilton Intra-Matic Auto Chrono is a modern reworking of a 1968 signature piece that offers a sporty but classic look. Combining authentic 60s appeal with the exclusive H-31 automatic movement, its distinctive panda dial is a guaranteed eye-catcher. The H-31 is a powerful automatic chronograph movement featuring an extended 60-hour power reserve, making it perfect for the demands of the sportiest of models. With an H pattern design on the oscillating bridge, there's no mistaking who made this movement. Black calf leather strap.