American Classic Intra-Matic Auto Chrono H38416541

American Classic Intra-Matic Auto Chrono. 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. This Hamilton leather strap is made from natural materials. The leather is tanned, but has not been treated, pigmented and finished in the same way as some other leather straps.