The Swiss Kubik MasterBox Collection is a modern and contemporary ingenious watch winder specifically designed for storing and winding your luxury automatic timepieces. The SK02.CV002 model is a double unit winder housed in a smooth natural tan calf-skin leather frame exterior. The Swiss made high performance motor is exclusively developed by Portescap in Switzerland with advance winding technology that is selected and recommended by leading Swiss Watch Brands. Powered by "C" cell batteries with a USB port to modify, adjust and program your watch winder to your exact specifications of rotations for your specific watch model. The open style frame can accommodate any size watch with an adjustable watch support.