Case thickness: 13mm; case diameter: 40mm; band width: 20mm; strap circumference: 175 +/- 5mm</br>Strap material: nylon; movement: digital chronograph; water resistance: 3 atm</br>Quartz Movement</br>Case Diameter: 40mm</br>Water resistant to 30m (100ft): in general?? withstands splashes or brief immersion in water?? but not suitable for swimming or bathing</br><br/>http://www.amazon.com/gp/product/B01N0ZOMZT