The Seiko 6117B watch movement features an indirectly driven minute hand, enabling a larger balance and a low profile. The differences between the 2375, 2379, and 2380 variations of this movement are currently undisclosed. The assignment of different rotors, such as a single part or a separate sinter-metal weight, is also not specified. In terms of functions, the Seiko 6117B movement includes automatic winding and a sweep second hand.