<p> </p> <p><b>Compatible Models</b></p> <p>iWatch Series 6</p> <p>iWatch Series SE</p> <p>iWatch Series 5 </p> <p>iWatch Series 4</p> <p>iWatch Series 3</p> <p>iWatch Series 2</p> <p>iWatch Series 1</p> <p>iWatch Nike+</p> <p>iWatch Edition.</p> <p> </p> <p><b>Adjustable length</b></p> <p>It is quick and easy to adjust according your wrist size.</p> <p>No matter small or big wrists, it can fit perfectly</p> <p>38mm 40mm fits wrist size from 5.12-7.48 inch</p> <p>42mm 44mm fits wrist size from 5.7-8.66 inch</p> <p> </p> <p>Four Pieces:The best gift can share with your friend / family / child for holidays.</p> <p> </p>