Atomic Clock Movement for Crafts and Crafts
Requires AA batteries (not included).
Compatible with dial thickness up to 0.3 inch (7 mm), hole diameter 0.3 - 0.4 inch (8
Accessories: Hanger, rubber packaging, washers, hexagonal nuts, round nuts, nut turner tool.
Compatible with Seiko SH and SW series watch hands sold separately.
In places where radio waves are unstable, it may operate or stop at different times. Please read the instructions carefully before use.
(From Amazon.co.jp)
Please use alkaline batteries