Dimensions: Height: 38.6mm, Width: 33.3mm, Depth: 10.5mm, Case Weight: 25g (1.51 x 1.29 x 0.41 in inches, 0.88 oz)</br>Sport Band with stainless steel pin; Digital Crown</br>Gorgeous anodised aluminium case; Ion-X glass</br>Heart rate sensor, accelerometer and gyroscope; Ambient light sensor</br>Retina display with Force Touch; Composite back, Splash and Water resistant in rain, exercising, etc (but not to be submerged in water, as it's not waterproof!)</br></br>Product Description</br></br>Apple Watch is unlike any device we've ever made. But we wanted interacting with it to be just as easy and intuitive as using your iPhone or working on a Mac. So we invented all-new ways to select, navigate, and input that are ideally suited to a smaller device worn on the wrist. The result is an experience that's both unique to Apple Watch and quintessentially Apple. --Apple Watch Sport featuresSilver or space gray anodized aluminum case. --Ion-X glass. --Retina display with Force Touch. --Composite back. --Sport Band with stainless steel pin.</br><br/>http://www.amazon.com/gp/product/B00WP9NFUG