The second-generation Apple Watch Ultra, introduced in 2023, is designed for endurance and adventure with advanced features. Here are its technical specifications:

• Year Introduced: 2023
• Design:
  • Case Size: 49mm
  • Materials: Aerospace-grade titanium
  • Weight: 61.4g
  • Depth: 14.4mm
  • Display: Always-On Retina LTPO OLED display, flat sapphire crystal, up to 3000 nits brightness
• Chip: S9 SiP with 64-bit dual-core processor, 4-core Apple Neural Engine
• Storage: 64GB
• Sensors:
  • Blood oxygen sensor
  • Electrical heart sensor and ECG app
  • Third-generation optical heart sensor
  • Temperature sensing
  • Depth gauge with ±1m accuracy
  • Water temperature sensor
  • Compass with Waypoints and Backtrack
  • Always-on altimeter
  • High-g accelerometer
  • High dynamic range gyroscope
• Safety Features:
  • Emergency SOS
  • International emergency calling
  • Siren
  • Crash Detection
  • Fall Detection
• Water and Dust Resistance:
  • Water resistance to 100m
  • Dust resistance IP6X
  • EN13319 certification for recreational scuba diving to 40m
  • Tested to MIL-STD 810H for various environmental conditions
• Connectivity:
  • Precision dual-frequency GPS
  • LTE and UMTS
  • Wi-Fi 4 (802.11n)
  • Bluetooth 5.3
  • Second-generation Ultra Wideband chip
• Power and Battery Life:
  • Up to 36 hours normal use
  • Up to 72 hours in Low Power Mode
  • USB-C magnetic fast charging cable
• Environmental Requirements:
  • Operating temperature: -4° F to 130° F (-20° C to 55° C)
  • Dive operating temperature: 32°F to 104°F (0°C to 40°C)
  • Operating Altitude: -1600 feet to 29,500 feet (-500 m to 9000 m)