Our new EVOlution watch winders feature an advanced winding mechanism. Unlike our traditional watch winders, which are wound by slow rotation, the EVOlution winders gently swing the watch. The mechanism will turn both clockwise and counter-clockwise in the same motion. Our revolutionary coil instrument powers the initial oscillation of the winding cycle and all subsequent oscillations use this momentum to power the device. Because of this advance technology, battery life is guaranteed for two years, which is ideal for storing your watches in a safe.The most versatile watch winder of the EVOlotion range. The base unit is a single winder available in four distinct colors and which can be used as a standalone item. Also available are double and quad cases, constructed in gloss finish Ebony, into which you can slot base unit winders in any combination of colors you desire - thus enabling the owner to add to his collection with ease,