USB Powered Automatic Watch Winder Professional Rotator for Self‑Winding Mechanical Watch

Mechanical watch automatic windingCharging timing version: Can be set to 1-8 hours timing shutdown built-in lithium battery, can be adjusted at two speeds for more than ten daysColour:blackMaterial:plastictype:A: Charging versionPackage Contents:1 x Watch WinderOnly 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.