... Controlled Step Movement Auto change to JJF, DCF, MSF 1 Motor Radio Controlled Clock Movement, Clock Accessory, Quartz Clock MovementSpecifications:Model ... ), DM2730(DCF), DM2740(MSF)Country: JJF, DCF, MSFSize(MM): 65x78x201 Motor MovementFeatures:1. Frequency:40KHZ/60KHZ auto change(JJY),77.5KHZ ...