The Dugena 3355 is a mechanical watch movement that was developed in 1937. It is notable for being the first chronograph with cam switching and offered optional 3 pushers. It is considered the predecessor of the Landeron-48 family and had a floating transition to the Landeron 48, where many parts were modified but most remain interchangeable. The Dugena 3355 movement includes functions such as a manual-wind chronograph with a 60-second, 30/45-minute measurement capability, sub seconds, and a chronograph feature.