Case size: 40mm; Band size: 18mm; digital chronograph display; mineral crystal face; imported Rose gold-tone plated metal case with blue outer ring; four buttons to control alarm, stopwatch, timer, and more Navy blue silicone band with buckle closure Water resistent to 100ft (30M): withstands splashes or brief immersion in water, but not suitable for swimming or showering This product is authentic and sold directly from the brand manufacturer to Amazon