... 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 ... /day8. Sensivity:50uV/m(JJY),70uV/m(DCF,MSF)9. Battery:LR6/AA,1.5V X1PCPackage:Packing Spec.:CARTON BOX WITH ...