Leanschi Watch Winder Single PU Leather WS01-CHOC. The setting are made thanks to 2 knob-buttons (Direction / Turns Per Day) located on the winders’ back. WS01 can be powered either through 2 batteries or with the A/C adaptor, delivered with the device (3V). Furthermore, you can serially link up to 3 WS01 together and supply them with a single A/C-adaptor, bridging the first winder (OUT-plug) with the next one (IN-plug) thanks to a specific LINK-cable delivered with any WS01 winder. “SLEEP” and “BOOST” functions integrated.