Casio G-Shock solar watch GM-B2100D-1AER gray steel case and bracelet. Watch with IP Gray finish steel case with a diameter of 44 mm and a thickness of 12 mm. Silver colored stainless steel ring with polished and satin finish. Model equipped with Bluetooth® Smart, Smartphone time, Double lighting, Shockproof, Vibration resistant, Solar function, Neobrite, World time function, Stopwatch - 1/100 sec - 24 hours, Timer - 1/1 sec. - 1 hour, 5 daily alarms, Indication of the day of the week in several languages, Activation / deactivation of the key sound, Hand shift function, Telephone search, Automatic calendar, 12/24 hour format, Mineral glass, Screwed caseback, Indicator battery level. Solid stainless steel bracelet in silver color with safety clasp. 20 bar water resistance, delivered with original box and official guarantee bf22