Radio Controlled Movement sweep second hand quartz clock movement alrm clock movement Radio Controlled Alarm Movement, Quartz Movement, sweep movementSpecifications:Model NO.: DM7910 (JJY), DM7930 (DCF), DM7940(MSF) - Sweep Second HandSize(MM): 69 ... . Sensivity:50uV/m(JJY),70uV/m(DCF,MSF)9. Alarm Accuracy: 5minutes10. Buzzer,Snooze (256seconds) / Light: to be wired extra11. Battery:LR6 ...