[Casio] G-Shock GULFMASTER Radio Solar Watch GWN-1000B-1BJF
●Tough solar (solar charging system). ●Tide graph. [Japan] Received radio waves: JJY, Frequency: 40kHz/60kHz (Fukushima/Kyushu compatible model). [China] Received radio waves: BPC, Frequency: 68.5kHz.