Apple Watch - 42mm Stainless Steel - Black Classic Buckle Made in USA or Imported 42mm Space Black Stainless Steel Case. Black Leather Band with Classic Buckle (Band Fits 145-215mm Wrists) Sapphire crystal. Retina display with Force Touch. Ceramic back. 8GB Internal Memory. Digital Crown. Speaker and microphone. WiFi. Bluetooth. Up to 18 Hours of Battery Life. Water resistant (Splash and Water Resistant, but not waterproof). Heart rate sensor, accelerometer, and gyroscope. Ambient light sensor.