Marked the first step in G-SHOCK's first 30 years of evolution. In pursuit of GW9400. Three tiny built-in magnetic, atmospheric pressure and temperature. Congratulations upon your selection of this CASIO watch. Note that CASIO COMPUTER CO., LTD. assumes no responsibility for any damage or loss suffered. Super-Full-Auto-LED light. If the ambient light fades, a turn of your wrist illuminates the watch display particularly brightly and in coulor. Shock-resistant.