All electrical items, unless otherwise noted, operate on 220V DC. To ensure full operation please use a converter, e.g. http://www.amazon.com/HDE-Universal-Voltage-Converter-Adapter/dp/B001AHTEEU This wonderful piece is crafted by Richard Glässer Seiffen. It also has a musical movement included and the houses are illuminated inside. The arch is 80cm / 31 inches wide and 41cm / 16 inches high. It runs with 230 Volt European electricity standard. In 120 Volt systems (USA, Canada & Japan) please use a voltage transformer.