GM-S2100PG-1A4 | CASIO,Ryujin and Yeji of @itzy.all.in.us are wearing the cool and stylish GM-S2100 series, equipped with an octagonal metal bezel. Watch: Ryujin:GM-S2100PG-1A4 Yeji:GM-S2100B-8A #ITZY #ITZYGSHOCK #GSHOCK #Unstoppableme #RYUJIN #YEJI,ITZY x G-SHOCK | CASIO,ITZY x G-SHOCK | CASIO,Ryujin and Yeji of @itzy.all.in.us are wearing the cool and stylish GM-S2100 series, equipped with an octagonal metal bezel. Watch: Ryujin:GM-S2100PG-1A4 Yeji:GM-S2100B-8A #ITZY #ITZYGSHOCK #GSHOCK #Unstoppableme #RYUJIN #YEJI