Hybrid radio wave reception system

GPS satellite signal + standard time radio wave (Multiband 6)

GPS satellite signals received in any time zone 
on Earth provide the correct time in the current location.
When GPS satellite signals are not available (indoors, during bad weather, etc.), 
standard time radio waves are received preferentially.
Driven by solar power, this hybrid system that selects 
between two types of time data waves depending on 
the usage environment enables more stable, reliable time information reception.
With this system, Casio has realized a proprietary high-performance 
time correction system offering all the convenience of 
the radio-controlled watch (including energy-efficient automatic 
nighttime radio wave reception and indoor reception), 
accompanied by universal GPS satellite time-calibration signal 
reception.