Amazfit T-Rex Ultra, The Ultimate Outdoor GPS Smartwatch

Specification of Amazfit T-Rex Ultra Smartwatch

• Brand: Amazfit
• Model Name: T-Rex Ultra
• Colour: Abyss Black
• Screen Size: 1.39"
• Special Feature: Mud-resistant, Altitude Assistant, 30m Freediving Support, Compass, Ultra-low Temperature Operation
• Health Tracking: 24/7 hour heart rate monitoring, SpO2, Sleep tracking, Stress monitoring
• Sports Modes: 160+ (25 strength training & 9 sports movements smart recognition), Skydiving, Free Diving, Triathlon
• Shape: Round
• Compatible Devices: Android, iOS
• Sensors: BioTracker 3.0 PPG optical sensor, Geomagnetic, Gyroscope, Accelerometer, Ambient Light, Barometric Altimeter

Design

• Colours: Abyss Black, Sahara
• Dimensions (without heart rate base): 47.3mmx47.3mmx13.45mm
• Weight (with strap): 89g
• Body Material: Stainless steel bezel, back panel, bridge and buttons;
  Polymer alloy middle frame;
• Buttons: 4
• Water-resistance Grade: 10 ATM

Display

• Material: AMOLED
• Size: 1.39"
• Resolution: 454x454
• PPI: 326
• Touchscreen: Glass material

Battery

• Battery Capacity: 500 mAh (rated value）
• Charging Method: Magnetic charging base
• Theoretical Charging Duration: Approx. 2 hours
• Typical Usage Scenario Battery Life: Up to 20 days
• Battery Saver Mode Battery Life: Up to 25 days
• Clock Mode Battery Life: Up to 50 days
• Heavy Usage Scenario Battery Life: Up to 9 days
• Accuracy GPS Mode: Up to 28 hours
• Automatic GPS Mode: Up to 46 hours
• Power Saving GPS Mode: Up to 58 hours
• Endurance GPS Mode: Up to 80 hours
• Low Temperature Mode (GPS on): 10 hours
• Low Temperature Mode (GPS off): 14 days
  

Sensors

• Health: BioTracker™ PPG biometric sensor (supports blood-oxygen)
• Movement: Acceleration sensor,
  Gyroscope sensor,
  Geomagnetic sensor,
  Barometric altimeter,
  Ambient light sensor
• Positioning: Dual-band & 6 satellite positioning systems
• Connection: WLAN 2.4GHz, Bluetooth 5.0 BLE

Other

• Motor: Linear Motor
• Application: Zepp App
• Supported device: Android 7.0 and above, iOS 12.0 and above

Strap

• Materials: Silicone
• Width: 22mm
• Min. & Max. Wrist Dimensions: 140mm-205mm
• Buckle: Classic pin buckle

Special Features

• Military Grade Toughness: Resistant to extreme 70℃ heat and -40℃ cold - as well as humidity, shock and more - this outdoor smartwatch has proved its toughness by passing 15 military-grade tests.

• The Amazfit T-Rex Ultra can be used as a map browsing tool to import OSM map files. The display of offline maps is only compatible with sports modes which support GPS positioning. The downloaded offline map must match your real location to be displayed, and a route file must be imported for navigation – it's not possible to choose a point on the offline map for navigation.

• Always-on Display: When the screen is illuminated, it displays system content. When the screen is in standby mode, it displays the time. This function requires users to manually set "Always-on Display". The user can switch on or off this feature through the watch or Zepp App.

• Corresponding sports modes: Include Outdoor Running, Treadmill, Walking, Indoor Walking, Outdoor Cycling, Pool Swimming, Rowing Machine, and Elliptical. The accuracy and sensitivity of the workout recognition feature varies from person to person, and are related to the posture and proficiency of the user during their workout. Short workout duration or frequent changes in posture may not trigger the automatic recognition feature.

• Low temperature mode: After being enabled, whenever the temperature of the watch surface is lower than -10°C, the watch automatically enters low-temperature mode, and only limited functions can be engaged at this time. Due to the physical characteristics of lithium batteries, the endurance of watches in low-temperature environments will be affected to a certain extent. 
  Ultra-low temperature operation with GPS on (-10℃ to -30℃): Wear the watch all day with low-temperature mode and GPS enabled; raise wrist to see watch time 100 times; 150 pushed messages a day; bright screen operation for 5 minutes per day.
  Ultra-low temperature operation with GPS off (-10℃ to -30℃): Wear the watch all day with low-temperature mode enabled and GPS disabled; raise wrist to see watch time 100 times; 150 pushed messages a day; bright screen operation for 5 minutes per day.
• The relevant data on this topic comes from the following report: H202109248524-01EN.

• Suitability for, and resistance to, diving is according to the EN13319 standard (report number is: S20221228846301) and the ISO 6245 standard (report number is: SHER230100000471).

• According to the ISO 22810:2010 standard, the Amazfit T-Rex Ultra achieves a rating of 10 ATM, for a water resistance of up to 100 meters, and is therefore suitable for splashes, snow, showering, swimming, and some high-speed water sports. It has passed third-party testing conducted by SWQC (SGS certification), and the report number is SWT2301-17. Remove the watch when taking a hot shower or trip to the sauna, since too much steam can affect the seal and make it less water-resistant in future.

• Strength Training sports mode: 25 exercises are able to be recognized at the time of product release, including Bodyweight squats, Bodyweight straight arm front squats, Barbell squats, Triceps pushdowns, bent-over rows, Barbell bench press, Sit-up holds, Knee-touch sit-ups, Dumbbell flys, Burpees, Burpee jumps, Overhead triceps extensions, Lying triceps extensions, Lateral raises, Jumping jacks, Lat pulldowns, Deadlift, Push-up, Shoulder press, Pull up, Bicep curls, Seated cable rows, Dumbbell drag curls, Straight-arm pulldowns, Russian twists. If an exercise is not auto-recognized by the watch, the Zepp App can provide a list of muscle groups or exercise names to choose from.

• The maximum storage space for music is 2.3GB (due to the system space occupied, the actual space used by the user may be less than 2.3GB); based on 5-10MB per song, it can store up to 270-470 MP3 songs. The watch has no built-in speaker, so connect via Bluetooth to your TWS earbuds to listen to music.

• 24-hour monitoring of heart rate and blood-oxygen saturation (SpO₂) needs to be enabled in the Zepp App. For heart rate monitoring, the user must enable Auto Heart Rate Monitor in the Zepp App, and the minimum value can be set to 1 minute. Abnormal heart rate alerts and the preset value need to be set in the Zepp App. To measure blood-oxygen saturation (SpO₂), please wear the watch tightly at one finger-width from the wrist, and keep your arm still for best results. SpO₂ alerts are sent if the detected rate is too low compared to the preset value, which needs to be set in the Zepp App, at a minimum of 80%. Movement and environmental and physical characteristics can affect the speed and accuracy of monitoring and measurement. The 24-hour stress level monitoring needs to be enabled on the watch or in the Zepp App. Alerts for high-stress levels are based on the preset value, and prompts for the breathing exercises need to be enabled on the watch.

Limitations

• 1,000nit brightness is not supported by the Low-Temperature mode or if battery life is below 30%. Depending on your environment, the watch can reach up to 1,000 nit brightness after automatic brightness has been enabled in the watch settings.

• When you are driving a car, taking a bus, or taking part in other such activities, accidental recognition may be triggered if these activities are particularly similar to the selected workout mode. When you are conducting outdoor activities, if the GPS signal is poor or the AGPS data information has not been synchronized with the mobile phone for an extended period, these outdoor activities may be assessed as indoor activities.

• The product should not be worn in environments with strong magnetic fields such as MRI machines or medical imaging machines, as they may cause damage to the watch.

• The radio waves generated by the equipment may affect the normal operation of implanted medical equipment or personal medical equipment, such as pacemakers and hearing aids. If you use these devices, please consult their manufacturers for restrictions on using this device.

 What's In The Box

• T-rex Ultra Smart Watch
• Magnetic Charging Cable
• User Manual