Orbita Sparta Rotowind Insafe 4 Watch Winder is made from superior quality material wooden case, front and side drop lid that is camouflaged with an aristocratic black vinyl material. Works in silence and provides exclusive service. The Orbita patented Rotorwind system pitches the watch every 10 to 15 minutes to sustain oscillations similar to when watch is worn on a wrist. The four supplied Lithium D cell batteries and individual power switch allows the watch winder to work for years together without requiring plugging it into AC power.