Features: Material: Made of plastic and metal, ensuring durability and . Size: Compact and portable, measuring 32mm in diameter for easy installation. Color: Stylish white color adds of to your watch winder. Voltage: Powered by a 3V power source, providing efficient energy for smooth operation. Rated Speed: Rotates at a steady speed of 8rpm, ensuring gentle and delicate winding for your precious watches. Note: Installation guide not included, we strongly recommend you professional installation. Please check as much as possible to make sure the item is what you need. Tips: The product may be updated constantly ,Due To Different Batches, The Actual Product May Have Slight Differences Or Color Differences, Which Does Not Affect Use Material: Plastic + Metal Color: As shown Package Contents: 1 x Watch Winder Motor 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.