Apple Watch Series 1, 42mm Aluminum Case with Sport Band
 
Track and share your daily physical activity. Measure your workouts. Monitor your health. Stay connected to the people and information you care about most. Now you can do it all even faster than before, thanks to a new dual-core processor. Durable, lightweight aluminum cases in silver, space gray, gold, and rose gold. Sport Band in a variety of colors. All the features of the original Apple Watch, plus a new dual-core processor for faster performance. All models run watchOS 3. 

Key Features:
Aluminum case with Sport Band
Dual-core processor
Splash resistant1
Wi-Fi (802.11b/g/n 2.4Ghz)
Bluetooth 4.0
Heart rate sensor
Accelerometer
Gyroscope
Ambient light sensor
OLED Retina display with Force Touch
Ion-X glass
Built-in rechargeable lithium-ion battery
Up to 18 hours of battery life2
Magnetic charging cable 

Selection may vary. Apple Watch requires iPhone 5 or later. 1Apple Watch Series 1 has a water resistance rating of IPX7 under IEC standard 60529. Apple Watch Series 1 is splash and water resistant, but submerging Apple Watch Series 1 is not recommended.