Sharp Atomic Clock Spc373 User Manual [2021] -
: Upon battery insertion, the clock enters reception mode. It may take several minutes to several hours to capture the atomic signal. Expert reviewers at JustAnswer
: The clock may take up to 24 hours to catch the atomic signal. For the best reception, place the clock near a window overnight. sharp atomic clock spc373 user manual
Press and hold the button for 2 seconds until the hour flashes. : Upon battery insertion, the clock enters reception mode