Only designed for 38mm Apple Watch/Sport/Edition. (Not including any Smart Watch in package). For the size of wrist: 15cm - 18cm (5.9inch - 7.1inch)</br>High quality top layer cow leather replacement watchband?? comfortable on your wrist</br>Dual loop design?? luxury & elegant looking female leather strap</br>Stainless steel buckle with precise polished?? tightly & securely</br>Equipped with firm metal adapter makes it much easier to replace the watch band</br></br>Product Description</br></br><b>Compatible With:</b> <br> Apple Watch/Sport/Edition 38mm<br> <br> <b>Service:</b><br> Any further information is needed?? please feel free to contact us.</br><br/>http://www.amazon.com/gp/product/B01F113L1C