Chip

• Faster dual-core processor
• Apple wireless chip

Features Series 3 GPS

• GPS, GLONASS, Galileo, and QZSS
• Barometric altimeter
• Water resistant 50 meters1
• Heart rate sensor
• Accelerometer
• Gyroscope
• Ambient light sensor
• Siri speaks
• Capacity 8GB
• Composite back 

  
  

  Display

  • Series 3 GPS
    • Second-generation OLED Retina display with Force Touch
    • 2x brighter (1000 nits)
    • Ion-X glass
    • 272 by 340 pixels (38mm)
    • 312 by 390 pixels (42mm)

  Power

  • Built-in rechargeable lithium-ion battery
  • Up to 18 hours3
  • Magnetic charging cable
  • USB power adapter
  • Supports AirPower mat4