The Casio Mens G Shock 2100 Neon Accent Series GA-2100-1A2ER watch combines a 45 mm round shaped plastic case and black plastic strap with a traditional buckle. It has a black dual display dial which is protected beneath hardlex glass. Power is generated by the quartz movement. This model also has a water resistance of up to 200 metres. This wath Also Features Blue Neon luminescent hour markers.