Details Casio G-Shock Watch GMA-S120NP-4A is a digital-analog watch that comes with flashy metallic colour and very sophisticated design. It includes LED light with auto light switch and selectable illumination duration. Offers world times with 29-time zone with 3 years approx. battery life. The watch features magnetic resistance, which means the case is constructed in such a way that the clock mechanism is protected from magnetic fields.