<p><strong>Item description</strong></p> <ul> <li>Callancity Alphabet Letter A-Z Necklace Pendant Watch Connector Adapter 2 in 1 Stainless Steel Diamond Platinum Plated Box Chain Compatible for Apple Watch 38mm 40mm only</li> <li>Please note the direction of the adapter when installed, if the installation error will cause slide. </li> <li>The side with a silver button must be faces the wrist, as shown in the product picture. </li> <li>How to choose 38mm or 40mm? There is mentioned on the back of your watch, which is written there. <br> 38mm or 40mm refers to model of the watch. </li> <li>watch connector Adapter Specification: 316L stainless steel,color: Silver</li> </ul> <p><strong>Items included</strong></p> <ul> <li>Crystal Diamond letter Pendant with watch connector adapter x 1 (38mm 40mm only, not include the watch and band)</li> <li>Stainless steel necklace x 1</li> </ul>