Radio controlled accurate to one second in 138 million yearssecond hand sweeps silently so it doesnt tick tockmade by watchmakers tavistock jonesradio controlled from the uks atomic time regulator its accurate to one second in 138 million yearsavailable in silverrequires 1xaa battery included click here to purchase more aa batteries shortcode tabdescriptionit doesnt go tick it doesnt go tock its the radio controlled wall clock with super silent technology a major breakthrough i