1、Multifunctional Design: The automatic double watch winder can provide automatic shaking for multiple mechanical watches at the same time, maintaining accurate operation of the watch. 2、Fingerprint Lock Protection: The automatic double watch winder features fingerprint recognition technology to ensure efficient and safe storage and protection of your precious watch. 3、Exquisite Material: The automatic double watch winder is handmade of microfiber leather, with a delicate and elegant appearance, making it the perfect choice for home decoration. 4、USB Plug in: The double watch winders for automatic watches supports USB plug in or battery operated, ensuring that each watch always maintains sufficient power. 5、Silent Operation: The double watch winders for automatic watches adopts a silent design that will not interfere with your rest and work environment. Item Type: Watch Winder Material: Microfiber Leather Weight: Approx. 4008g / 8.8lb Noise Level: ≤10db Power: 10W Watch Chain Circumference: 16-21cm / 6.3-8.27in Compatibility: Suitable For Most Automatic Mechanical Watch Brands On The Market Size: Approx. 27x21.5x18cm / 10.5x21.5x18in 1 x Watch Winder 1 x USB Cable 1 x Fingerprint Lock 1 x Cleaning Cloth 2 x English Manual