Apple Watch Ultra 49mm Smartwatch – with Fitness Tracker, Precision GPS, Action Button, Extra-Long Battery Life, Brighter Retina Display
Key Features:

• Wi-Fi 4 (802.11n)
• Bluetooth 5.3
• Tested to MIL-STD 810H: altitude, high temperature, low temperature, temperature shock, immersion, freeze with thaw, ice and freezing rain, and shock and vibration
• Dust and Water resistance IP6X
• Three-microphone array with beamforming and wind noise mitigation
• Always-On Retina LTPO OLED display-Up to 3000 nits maximum brightness
• Flat sapphire crystal display
• S9 SiP with 64-bit dual-core processor
• Built-in rechargeable lithium-ion batter
• USB-C magnetic fast charging cable
• Up to 36 hours normal use
• Up to 72 hours in Low Power Mode