Garmin Fenix 8 & Apple Watch Ultra share many similarities, but there are also important differences, such as quality, performance, features, design, and connectivity. If you want the best one between them, I Would recommend the Garmin Fenix 8 rather than the Apple Watch Ultra.
Why Do I Recommend The Garmin Fenix 8?
- The Garmin Fenix 8 features multi-band GNSS with GPS, GLONASS, Galileo, and BeiDou support for superior satellite accuracy in remote and mountainous regions, whereas the Apple Watch Ultra supports only dual-frequency GPS (L1 and L5).
- Garmin Fenix 8 has solar charging capability through its Power Glass lens to extend battery life during outdoor use, while the Apple Watch Ultra relies solely on wired charging.
- It includes offline topographic, road, and ski maps for full navigation without a smartphone connection, whereas the Apple Watch Ultra requires an iPhone for detailed map functionality.
- The Garmin Fenix 8 comes with up to 28 days of smartwatch battery life for long expeditions without frequent charging, while the Apple Watch Ultra provides only up to 36 hours of usage per charge.
- Garmin Fenix 8 supports ANT+ connectivity to link with professional sensors like heart rate straps and power meters, whereas the Apple Watch Ultra uses Bluetooth only.
- It features a built-in LED flashlight for nighttime activities and safety visibility, while the Apple Watch Ultra lacks a dedicated flashlight and relies on the display for illumination.
- The Garmin Fenix 8 includes a Body Battery metric to track daily energy and recovery for better training management, whereas the Apple Watch Ultra does not include an equivalent energy-level indicator.
- Garmin Fenix 8 provides a Training Readiness score that combines HRV, recovery, and sleep data to guide workout intensity, while the Apple Watch Ultra presents fitness data separately without a unified readiness measure.
Maybe the Apple Watch Ultra can make you comfortable because it’s a little bit cheaper than the Garmin Fenix 8. But you have to compromise all the above-mentioned features. Now the Decision is Yours. I hope it was helpful to choose the right one.
Side-by-Side Comparison
| Feature | Garmin Fenix 8 | Apple Watch Ultra |
| Display technology | AMOLED / Solar MIP options | LTPO OLED Retina |
| Case sizes | 43 / 47 / 51 mm | 49 mm |
| Battery life (smartwatch mode) | Up to ~21–29 days | Up to 36 hours |
| Battery life (GPS tracking) | Up to ~54–84 hours | Up to 17 hours |
| Solar charging | Available on Solar models | Not available |
| Dive role | Full dive computer | Depth gauge + dive app |
| Dive algorithm support | Bühlmann ZHL-16c | No decompression algorithm |
| Buttons / controls | 5 physical buttons + touch | Digital Crown + side + Action + touch |
| LED flashlight | Built-in top LED | No hardware LED |
| GNSS / navigation hardware | Multi-band GPS + GLONASS/Galileo/BeiDou | Precision dual-frequency GPS |
| Offline maps | Full topo / road / ski offline maps | No full offline topo maps |
| Accessory connectivity | Bluetooth + ANT+ | Bluetooth (no ANT+) |
| Voice features | On-watch voice control + voice notes | Siri voice assistant + dictation |
| Training readiness metric | Training Readiness score | No Training Readiness score |
| Energy / fatigue metric | Body Battery | No Body Battery |
| App ecosystem | Garmin Connect IQ store | watchOS App Store |
| Platform integration | Garmin Connect platform | Apple Health + Fitness |
| Price | Check Garmin 8 Price | Check Apple Ultra Price |
What Common Both Can Do?
- GPS Tracking: Both watches include advanced GPS systems that allow users to accurately track outdoor routes, runs, and hikes. This ensures reliable navigation and distance measurement even in remote or challenging environments.
- Heart Rate Monitoring: Each device provides continuous heart rate tracking to help users monitor their exertion levels, training intensity, and overall cardiovascular health during workouts and daily activities.
- Blood Oxygen (SpO2) Sensor: Both models include SpO2 monitoring to measure oxygen saturation in the blood, an important health metric for altitude training and general wellness tracking.
- Sleep Tracking: Each watch tracks sleep duration and quality, giving users insight into sleep patterns and recovery. This helps optimize rest and performance readiness.
- Temperature Sensing: Both devices include temperature sensors that detect skin or ambient temperature changes, useful for wellness tracking and environmental adaptation during outdoor use.
- Barometric Altimeter: The Fenix 8 and Ultra use barometric sensors to measure elevation gain and loss. This is particularly useful for hikers, climbers, and endurance athletes tracking vertical performance.
- Compass: Each model has a built-in compass for accurate directional navigation, ensuring reliable orientation when exploring unfamiliar terrain without relying on a phone.
- Accelerometer: Both watches include accelerometers that detect movement and track activity levels, essential for step counting, motion detection, and fall detection features.
- Gyroscope: Each device uses a gyroscope to detect rotation and orientation changes, improving accuracy for motion tracking and workout recognition.
- Always-On Display: Both watches feature always-on display modes that keep essential information visible at all times, enhancing usability during workouts and outdoor activities.
- Water Resistance (10 ATM): Each device is rated for 10 ATM water resistance, allowing safe use while swimming, snorkeling, or during heavy rain without damage concerns.
- Touchscreen: Both models have responsive touchscreens, allowing intuitive control and easy navigation through menus, maps, and apps.
- Bluetooth Connectivity: Each watch supports Bluetooth for syncing data, streaming music, and pairing with smartphones or wireless accessories like earbuds and sensors.
- Wi-Fi Connectivity: Both include Wi-Fi connectivity for syncing data, downloading updates, and accessing connected services without needing a phone nearby.
- Music Storage: Each watch allows onboard music storage and offline playback, giving users the ability to listen during workouts without carrying a phone.
- Workout Tracking: Both devices feature extensive workout tracking modes for multiple activities, including running, cycling, swimming, and strength training.
- Stress Tracking: Each watch measures stress levels based on heart rate variability, helping users recognize and manage periods of high strain or fatigue.
- Smart Notifications: Both models display notifications for calls, texts, and apps directly on the wrist, improving connectivity and convenience on the go.
- Contactless Payments: Garmin Fenix 8 supports Garmin Pay and Apple Watch Ultra supports Apple Pay, allowing quick and secure payments without physical cards.
- Titanium Build Option: Each device is available in a durable titanium case variant that enhances strength and reduces weight for outdoor and rugged use.
Common Features
| Feature | Garmin Fenix 8 | Apple Watch Ultra |
| GPS Tracking | Yes | Yes |
| Heart Rate Monitoring | Yes | Yes |
| Blood Oxygen (SpO2) Sensor | Yes | Yes |
| Sleep Tracking | Yes | Yes |
| Temperature Sensing | Yes | Yes |
| Barometric Altimeter | Yes | Yes |
| Compass | Yes | Yes |
| Accelerometer | Yes | Yes |
| Gyroscope | Yes | Yes |
| Always-On Display | Yes | Yes |
| Water Resistance (10 ATM) | Yes | Yes |
| Touchscreen | Yes | Yes |
| Bluetooth Connectivity | Yes | Yes |
| Wi-Fi Connectivity | Yes | Yes |
| Music Storage | Yes | Yes |
| Workout Tracking | Yes | Yes |
| Stress Tracking | Yes | Yes |
| Smart Notifications | Yes | Yes |
| Contactless Payments | Yes | Yes |
| Titanium Build Option | Yes | Yes |
| Price | Check Garmin 8 Price | Check Apple Ultra Price |
FAQ
Is the Garmin Fenix 8 compatible with iPhones and Android devices? Can the Apple Watch Ultra and Garmin Fenix 8 be used for diving? Do both watches include GPS navigation? Which watch has better battery life? Can I download music directly to both watches? Are both watches suitable for swimming? Do both watches support heart rate monitoring? Can I receive calls and messages on both devices? Do both watches have SpO2 sensors for blood oxygen monitoring? Which watch supports solar charging? Do both watches include offline maps? Can both track stress and recovery levels? Do both support contactless payments? Are both suitable for rugged outdoor use? Do both watches include temperature and altimeter sensors? |