9mm Thin</br>Japanese quartz movement</br>Genuine leather Strap</br>Water resistant to 30 m(100ft)??but not suitable for swimming</br>#304 Stainless steel Watch Body</br></br>Product Description</br></br>Battery life: in the normal situations can be using 18 months<br> NOTE: Please do NOT press any buttons in water when swiming or diving <br>Please be free to contact us if you have any problem with this watch</br><br/>http://www.amazon.com/gp/product/B01EUCG2XM