The automatic watch winder provides a quiet and efficient way to keep your mechanical watch fully wound and ready to wear. It features USB power, green color, and a plastic construction. This watch winder is perfect for storing and maintaining your collection of mechanical watches. The watch is not included. Slight color differences or differences in the actual product do not affect use. color: Green material: plastic Switch operation instructions: 1. the button to start the machine after power is on. Indicator light low light enter mode 1: positive for 2 minutes, stop for 8 minutes, reverse for 2 minutes,stop for 8 minutes, cycle. 2. Continue the button, the indicator light is strong, enter mode 2: turn forward for 10 minutes, reverse for 10 minutes, cycle for 2 hours, stop for 6 hours,cycle; the button repeatedly to switch between the twwo modes. 3. In any mode, long the button for 3s to power off, and the indicator is off Package Contents: 1 x watch winder(without 1 x AA Battery ) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.