WWB relates to using radio-controlled clock settings, which is fine and works as follows:
To set up the clock time using the Radio-controlled clock function, press and hold the Info/menu button when the unit is in power off mode.
2. Rotate the Tuning control until a clock symbol appears on the display. Press and release the Tuning control to enter the setting.
3. Rotate the Tuning control until DCF77 (European version), WWVB (US version), JJY40/60 (Japan version) or MSF (UK version) appears on the display. Press and release the Tuning control to confirm the setting. And the clock time of the radio will set up automatically to the Radio-controlled clock time.
4. If the radio-controlled clock signal is being received by the radio, the radio-controlled time icon will flash on the display at an internal of 1 second. If the radio is not receiving any radio-controlled clock signal, the radio-controlled time icon will flash at an interval of 3 seconds.
5. The radio will synchronize its clock time on the hour. If the radio time has been synchronized with radio-controlled clock time, the radio-controlled time icon will stay on the LCD display and the radio will keep synchronizing its clock time every odd hour on the hour. If the radio is receiving the radio-controlled clock signal but is not yet synchronized to the radio-controlled clock time, it will synchronize its clock time at every hour on the hour.