142 facts in comparison
Amazfit T-Rex Ultra vs Garmin Fenix 7S Sapphire Solar
Amazfit T-Rex Ultra
Garmin Fenix 7S Sapphire Solar
Why is Amazfit T-Rex Ultra better than Garmin Fenix 7S Sapphire Solar?
- 6 days longer battery life?
20 daysvs14 days - 3.58x higher resolution?
454 x 454 pxvs240 x 240 px - Has irregular heart rate warnings?
- 15.83% bigger screen size?
1.39"vs1.2" - Has wireless charging?
- 15.6% higher pixel density?
326 ppivs282 ppi - Includes maps?
- Has food diary?
Why is Garmin Fenix 7S Sapphire Solar better than Amazfit T-Rex Ultra?
- 82 hours longer battery life - GPS?
162 hoursvs80 hours - Has a temperature sensor?
- Has trackback mode?
- Supports ANT+?
- Has multi-sport mode?
- Has NFC?
- Locates your phone?
- 70 m higher waterproof depth rating?
100 mvs30 m
Price comparison
Amazfit T-Rex Ultra
Amazfit T-Rex Ultra Smart Watch for Men, 20-Day Battery Life, 30m Freediving, Dual-Band GPS & Offline Map...Amazfit T-Rex Ultra Smart Watch for Men, 20-Day Battery Life, 30m Freediving, Dual-Band GPS & Offline Map Support, Mud-Resistant 100m Water-Resistant, Military-Grade Outdoor Sports Watch, Black
Garmin Fenix 7S Sapphire Solar
Garmin fenix 7S Sapphire Solar, Smaller adventure smartwatch, with Solar Charging Capabilities, Rugged wa...Garmin fenix 7S Sapphire Solar, Smaller adventure smartwatch, with Solar Charging Capabilities, Rugged watch with GPS, touchscreen, wellness features, carbon gray DLC titanium with black band
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Design
The device is dustproof and water-resistant. Water-resistant devices can resist the penetration of water, such as powerful water jets, but not being submerged into water.
Resistance to sweat makes it ideal for use while doing sports.
Damage-resistant glass (such as Corning Gorilla Glass or Asahi Dragontrail Glass) is thin, lightweight, and can withstand high levels of force.
The ATM rating indicates how much water pressure a device can withstand. 3 ATM is one of the lowest ratings and means that the device can only withstand splashes of water, whereas 20 ATM is one of the highest ratings and means that the device can be used for snorkeling and water sports.
The size of the screen (measured diagonally).
Resolution is an essential indicator of a screen's image quality, representing the maximum amount of pixels that can be shown on the screen. The resolution is given as a compound value, comprised of horizontal and vertical pixels.
The type of technology used in the display.
The watch band is removable and can be replaced by any standard watch band of the correct size, allowing you to customise it to your liking.
You can operate the device easily, by pressing the screen with your fingers.
Sensors
GPS enables global positioning, useful in map, geo-tagging or navigation apps.
A heart rate monitor can help show your fitness levels, enabling you to calculate a suitable intensity of exercise.
Your blood oxygen level is a measurement how much oxygen is reaching your muscles. It is important because low levels mean that you will become easily fatigued during exercise. The more exercise you do, the better your blood oxygen levels will become.
This measures barometric air pressure. It can predict weather changes, for example a sudden drop in air pressure could mean a storm is coming. When calibrated correctly it can be used to determine altitude, which helps GPS devices to lock on quicker and with greater accuracy.
An accelerometer is a sensor used to measure the linear acceleration of a device. A common application is detecting when a device changes between vertical and horizontal positions.
A compass is useful for gaming, maps, and navigation software.
With a temperature sensor you can monitor changes in temperature to measure your exertion levels and avoid hyperthermia.
A cadence sensor measures the number of pedal revolutions per minute when you are cycling. It enables you to monitor how fast you are pedaling.
A gyroscope is a sensor that tracks the orientation of a device, more specifically by measuring the angular rotational velocity. Initially, they were built using a spinning rotor to detect changes in orientation, like twisting or rotation.
Activity tracking
With a route tracker you can add your route onto a map. It is helpful if you plan to do the same route again, or want to share it with your community.
It tracks how far you travel.
Measuring pace shows how much time it takes to travel one kilometer or one mile. For example, in running, a 4 minute kilometer would be a very good pace.
This feature enables you to track your route and reverse it in order to guide you back to where you began your journey.
It can track your sleep, such as how long you sleep for and the quality.
A multi-sport mode allows you to easily switch between tracking different sports such as running, cycling, and swimming. This feature is ideal for those who need to change quickly between various activities (e.g., triathletes).
The device automatically detects when you start an activity such as jogging, saving you from entering it manually at a later time.
It can detect changes in elevation, such as when you are climbing stairs.
It tracks how many steps you take throughout the day, allowing you to see how active you have been.
Connectivity
It is compatible with a range of iOS devices such as iPhones, iPads and the iPod Touch.
It is compatible with a range of Android devices such as smartphones and tablets.
The device can connect to Wi-Fi.
Bluetooth is a wireless technology standard that allows data transfers between devices placed in close proximity, using short-wavelength, ultra-high frequency radio waves. Newer versions provide faster data transfers.
Devices that use cellular technology can connect to mobile networks. Cellular networks have much wider signal coverage than Wi-Fi.
ANT+ is a wireless protocol similar to Bluetooth Smart, and is very power efficient. It is mainly used for fitness monitoring devices such as heart rate monitors and cadence sensors to connect to other devices (e.g., sports watches, smartphones, and cycling computers).
Wi-Fi version
Unknown. Help us by suggesting a value. (Amazfit T-Rex Ultra)
Unknown. Help us by suggesting a value. (Garmin Fenix 7S Sapphire Solar)
The Wi-Fi versions supported by the device.
NFC (near-field communication) allows a device to perform simple wireless transactions, such as mobile payments. Note: this feature may not be available in all markets.
Battery
Battery power, or battery capacity, represents the amount of electrical energy that a battery can store. More battery power can be an indication of longer battery life.
With a longer battery life, you don’t have to worry about charging the device as often.
There is less chance that you will run out of battery during an adventure.
With a long battery life, you can train for several hours a week and only have to recharge the device every few weeks.
The time it takes to fully charge the battery.
It supports a wireless charging standard such as Qi. To charge the device, you simply put it down on a compatible charging pad.
A solar battery takes its energy from light, and stores it in a self-recharging battery which never needs to be changed.
battery life in power save mode
600 hours
Unknown. Help us by suggesting a value. (Garmin Fenix 7S Sapphire Solar)
In power save mode you can still check what time it is and other basic functions. A long battery life is good if you wear the device day to day.
The battery can be recharged and used over again.
Features
Heart rate variability (HRV) tracking measures fluctuations in the time between heart beats. These fluctuations can be an indication of health conditions (such as heart conditions or mental health issues). Note: This feature may not be available in all markets.
VO2 max capacity is a measurement of the amount of oxygen your body can use during physical exercise. A high VO2 max capacity indicates good fitness levels.
This measurement is your heart rate per minute when you're at rest, such as when you're relaxed, sitting, or lying down. For adults, this is typically between 60–100.
It can notify you when your resting heart rate is above or below the normal range.
This is based on various information, such as your previous workout, sleep quality, and stress levels. Taking everything into account, it will give you an idea of whether your body is ready for another workout or if you should focus on recovery.
You can upload different maps to your device. It is handy for people who like to explore new places.
Vibrating alerts have a variety of uses, such as interval training.
With a stopwatch you can time yourself.
The device has a feature that allows you to find your smartphone if you have misplaced it.
App & Software
Your activity data is analysed to give you reports, available to view through the app or website. This allows you to see how active you have been and to help you make improvements.
The device detects when you have been idle for too long, and alerts you to encourage you to stay active.
This is useful if you are on a strict training diet or if you are trying to lose weight. It can also help to boost your motivation.
Allows you to set your own goals, such as reaching 15,000 steps in a single day.
You are awarded achievements for reaching goals, helping to encourage you and keep you motivated.
You can download the app for free, from platforms such as Google Play or the App Store.
Has exercise diary
✔Amazfit T-Rex Ultra (Zepp)
✔Garmin Fenix 7S Sapphire Solar (Garmin Connect Mobile)
It has an exercise diary, allowing you to easily keep track of your previous workouts.
Adverts can be distracting and obtrusive. Apps and blogs without ads are more aesthetically pleasing, nicer to use, and make the content stand out.
You can input your weight data, making it easier to track changes.
Miscellaneous
An indicator shows you when the device has low battery.
ECG stands for electrocardiogram and measures the electrical activity of the heartbeat, which is a more in-depth reading of heart health than blood pressure alone. Note: This feature may not be available in all markets.
It can determine when you have stopped working out and pause your current workout tracking until you start moving again.
It is compatible with PCs and laptops running the Windows operating system.
Compatible with external heart rate monitors
✔Amazfit T-Rex Ultra (Zepp)
✔Garmin Fenix 7S Sapphire Solar (Garmin Connect Mobile)
It supports third-party heart rate monitors to incorporate your pulse data.
Compatible with smart scales
✔Amazfit T-Rex Ultra (Zepp)
✔Garmin Fenix 7S Sapphire Solar (Garmin Connect Mobile)
It is compatible with smart scales such as the Fitbit Aria and Withings range. These scales transmit information such as weight and BMI to connected services over Wi-Fi.
You can set a passcode to keep your data private.
These services are ideal if you want to use the app while sat down at your computer, as well as on-the-go.
It is compatible with Mac OS X devices such as MacBooks and iMacs.
Price comparison
Amazfit T-Rex Ultra
Amazfit T-Rex Ultra Smart Watch for Men, 20-Day Battery Life, 30m Freediving, Dual-Band GPS & Offline Map...Amazfit T-Rex Ultra Smart Watch for Men, 20-Day Battery Life, 30m Freediving, Dual-Band GPS & Offline Map Support, Mud-Resistant 100m Water-Resistant, Military-Grade Outdoor Sports Watch, Black
Garmin Fenix 7S Sapphire Solar
Garmin fenix 7S Sapphire Solar, Smaller adventure smartwatch, with Solar Charging Capabilities, Rugged wa...Garmin fenix 7S Sapphire Solar, Smaller adventure smartwatch, with Solar Charging Capabilities, Rugged watch with GPS, touchscreen, wellness features, carbon gray DLC titanium with black band
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