Ladies Women 925 Sterling Silver Watch Luxury Silver Vintage Watch Silver Bangle Silver Wrist Silver Bracelet Fine Lines Oval Watch A1003(black) Via DHL This item is 100% of the 925 international standard sterling silver material. The watch strap,the watch case all is made of 925 sterling silver. The circumference is 18CM. Battery inside,which can use 3 Years normally. As for the water resistance, daily Waterproof, daily washing hand is OK. Suitable for everyday use. Splash/rain resistant. NOT suitable for showering, bathing, swimming, snorkelling, water related work and fishing. NOT suitable for diving.