1. Charging timer version: can set 1-8 hours timer shutdown. Built-in 1200mAh lithium battery, can be used for more than ten days. Two adjustable speeds
2. Two swing modes: front and back swing, left and right swing.
3. Suitable for mechanical watches with automatic winding function
4. Dont worry about the watch being magnetized, about 10 cm from the bottom
5. Plug-in version plug in USB cable for direct use, 1 gear speed