Apple Watch Ultra 4 vs Apple Watch Ultra 2
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General
| Country of Origin | United States | |
| Brand | Apple | Apple |
| Model | MRF63HN | |
| Model Name | Watch Ultra 4 | Watch Ultra 2 |
| Sim | Yes, eSim | Yes, eSim |
| Ideal For | Men, Women | Men, Women |
| Sales Package | Smartwatch, Strap, Magnetic Fast Charging USB-C Cable, User Manual | Smartwatch, Strap, Magnetic Fast Charging USB-C Cable, User Manual |
Design and Body
| Weight | 63 g | 61.4 g |
| Material | Sapphire crystal front, ceramic/sapphire crystal back, titanium frame | Titanium |
| Shape | Rectangle | Rectangle |
| Water Resistant | Yes | Yes |
| Water Resistant Depth | 100 m | 100 m |
| Water Resistant Certificate | IP6X | |
| Dust Proof | Yes | Yes |
| Scratch Resistant | Yes | Yes |
Display
| Type | Color OLED | Color OLED |
| Touch | Yes, Multi Touch | Yes, Multi Touch |
| Size | 1.92 inches | 1.93 inches |
| Resolution | 422 x 514 pixels | 410 x 502 pixels |
| PPI | 314 ppi | 326 ppi |
| Ambient Light Sensor | Yes | Yes |
| Always On Display | Yes | Yes |
| Glass Type | Sapphire Crystal Glass | |
| Features | Always‑On Retina display with wide‑angle OLEDs and LTPO3, 3000 nits Peak Brightness, 1Hz refresh rate, Night Mode for Apple Watch Ultra faces (Modular Ultra, Wayfinder, Orienteering) | Always-On Retina LTPO OLED Display, up to 3000 nits |
Memory
| RAM | 2 GB | 2 GB |
| Inbuilt Memory | 64 GB | 64 GB |
Connectivity
| Wi-Fi | Yes, Wi‑Fi 4 (802.11n) | Yes, Wi-Fi 802.11 b/g/n, dual-band |
| 5G | Yes | |
| Voice Calling | Yes | Yes |
| Bluetooth | Yes, 5.3 | Yes, 5.3 |
| GPS | Yes | Yes |
| 3G | Yes | Yes |
| 4G | Yes | Yes |
| VoLTE | Yes | Yes |
Extra
| NFC | Yes | Yes |
| Gesture Control | Yes | |
| Gyroscope | Yes | Yes |
| Voice Assistant | Yes | |
| Inbuilt Microphone | Yes | Yes |
| Inbuilt Speaker | Yes | Yes |
| Notifications | Yes | Yes |
| Extra Features | Crash Detection, MIL-STD 810H, Precision Finding for iPhone | Crash Detection, Blood Glucose Level Monitoring, Fall Detection, Dust Resistant IP6X Certification, Dual Speaker, Three-Microphone Array, EN13319 Recreational Scuba Diving to 40m, Tested to MIL-STD 810H, Double Tap Gesture to receive and end the call, Precision Finding for iPhone |
Camera
| Flash | Yes | Yes, Screen Flash |
Technical
| OS | Watch OS | WatchOS 10 |
| Compatible OS | iOS | iOS |
| CPU | Apple S11 | S9 SiP with 64-bit Processor |
| GPU | PowerVR | PowerVR |
Multimedia
| Yes | Yes | |
| Music | Yes | Yes |
Battery
| Battery Type | Lithium Ion | Lithium Ion |
| Removable Battery | Non-Removable Battery | Non-Removable Battery |
| Battery Backup | 2.08 days | 1.5 days |
| Fast Charging | Yes | Yes |
| Wireless Charging | Yes | Yes |
Fitness Features and Sensors
| Heart Rate Monitor | Yes | Yes |
| SpO2 (Blood Oxygen) Monitor | Yes | Yes |
| BP Monitor | Yes | Yes |
| Temperature Sensor | Yes | Yes |
| Pedometer | Yes | Yes |
| Altimeter | Yes | Yes |
| Compass | Yes | Yes |
| Sleep Monitor | Yes | Yes |
| Reminder | Yes | Yes |
| Meters and Sensors | Accelerometer, Calorie Count, Step Count, Barometer, Emergency SOS via satellite | Accelerometer, Calorie Count, Step Count, Accelerometer, Gyro, Barometer, Always-on altimeter (-500m to 9000m), Compass, SpO2, VO2max, Temperature (body), Temperature (water), Temperature sensing (0.01˚ accuracy), ECG |
| Extra Features | Alarm Clock, Stopwatch, Timer, VO2max, Temperature (body), Temperature (water), Temperature sensing (0.01˚ accuracy), ECG, Blood Glucose Level Monitoring, Recovery HRV | Alarm Clock, Stopwatch, Timer |
Warranty
| Warranty | 1 year, Manufacturer Warranty |
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