For Smart Watch Band Series 3 Series 2 Series 1 Black Band comes with Apple Watch lugs on both ends, which locks onto apple watch band interface precisely and securely. Easy to install or remove If you're not satisfied, before leaving a negative review, please contact us a for new replacement. Made from soft and durable silicone, lightweight,comfortable and breathable for good hand feeling. M/L Size, fit for 6.3 - 8.3 inch wrist ( 160 - 210mm). Package included: Watch Bands only. Smart Watch and other accessories Not Included. Perfectly fit for Apple Watch 38mm,Apple watch Series 2 & Series 1 Sport & Edition.