31 time zones (48 cities + Universal Time Coordinated). 1/100th of a second stopwatch. Full automatic calendar (to the year 2099). Accuracy: ±15 seconds per month. Water resistance to 200 metres (20 bar).Bezel and case materials: Stainless steel. Clasp style: Double folding buckle. Case size (L×W×H): 48.5×45.4×11.8mm. Water resistance to 200 meters (20 bar). The original Casio G-SHOCK GA-2100SKE-7A box. The certificate of authenticity of the Casio G-SHOCK GA-2100SKE-7A.