Description: 【Automatic Watch Winders】Watch Winders, keeps your self winding mechanical watches running smoothly by simulating natural wrist movement, ensuring accurate timekeeping even when not worn 【Upgraded Stability and Performance】Watch Winders features eight weighted beads for enhanced balance and operations, along with non slip base and sponge padding to prevent tipping 【Material】Watch Winders is made of ABS plastic construction with noise reducing technology to protect delicate watch mechanisms 【Easy to Use】Simply place your watch on the frame, and give it a gentle push to start continuous swinging—ideal for automatic watches only 【Compact and Multi Purpose】Measures 3.74inchx3.74inchx8.15inch; doubles as a stylish storage box while keeping your watches wound and ready to wear anytime Specification: 9.5cmx9.5cmx20.7cm/3.74inchx3.74inchx8.15inch Package Includes: 1 Watch Winders 1 USB Cable Note: Please allow slightly errors due to manual measurement and different monitors.