AmazFit T-Rex Ultra Customer Reviews
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AmazFit T-Rex Ultra
Amazfit Balance 3
Amazfit T-Rex 3 Pro
Samsung Galaxy Watch Ultra| Specification | AmazFit T-Rex Ultra | Amazfit Balance 3 | Amazfit T-Rex 3 Pro | Samsung Galaxy Watch Ultra |
|---|---|---|---|---|
| Brand | Amazfit | Amazfit | Amazfit | Samsung |
| Model | Amazfit T-Rex Ultra | Amazfit Balance 3 | Amazfit T-Rex 3 Pro | Samsung Galaxy Watch Ultra |
| Dimensions | 47.3 × 47.3 × 13.45 mm, excluding heart-rate sensor base | 51.4 × 51.4 × 12.5 mm; 14.6 mm including heart-rate sensor | 48 mm: 48 × 48 × 14 mm; 44 mm: 44.8 × 44.8 × 13.2 mm, without heart-rate sensor base | 47.1 × 47.4 × 12.1 mm |
| Weight | 89 g without strap | Stainless steel: 62 g; titanium: 55 g, without strap | 48 mm: 52 g; 44 mm: 46.8 g, without strap | 60.5 g without band |
| Build materials | 316L stainless-steel bezel, back panel, bridge and buttons; polymer-alloy middle frame | Stainless-steel frame with fibre-reinforced polymer shell; titanium edition: Grade 5 titanium frame and case with stainless-steel buttons | Fibre-reinforced polymer case; Grade 5 titanium bezel and buttons | Titanium case |
| Wrist size | 140–205 mm | 140–210 mm | 48 mm: 145–210 mm; 44 mm: 140–205 mm | Not specified |
| Strap / band | 22 mm silicone strap with classic pin buckle | 22 mm quick-release silicone; pin buckle | 48 mm: 22 mm; 44 mm: 20 mm silicone quick-release strap; pin buckle | Not specified |
| Controls / buttons | Four physical buttons; glass touchscreen | Four physical buttons; touchscreen | 4 physical buttons; touchscreen | Touchscreen; Quick button; Home and Back buttons |
| Announced | Not specified | Not specified | Not specified | 2024, July 10 |
| Specification | AmazFit T-Rex Ultra | Amazfit Balance 3 | Amazfit T-Rex 3 Pro | Samsung Galaxy Watch Ultra |
|---|---|---|---|---|
| Display | 1.39-inch AMOLED | 1.5-inch AMOLED | 48 mm: 1.5-inch; 44 mm: 1.32-inch AMOLED | 1.5-inch Super AMOLED |
| Screen resolution | 454 × 454 pixels, 326 ppi | 480 × 480 pixels; 323 ppi | 48 mm: 480 × 480 pixels, 322 ppi; 44 mm: 466 × 466 pixels, 353 ppi | 480 × 480 pixels |
| Display protection | Glass | Sapphire glass | Sapphire glass | Sapphire crystal |
| Display features | Up to 1,000 nits; Always-On Display; 120+ watch faces | Up to 3,000 nits peak brightness; Always-On Display | Not specified | Full-colour always-on display |
| Specification | AmazFit T-Rex Ultra | Amazfit Balance 3 | Amazfit T-Rex 3 Pro | Samsung Galaxy Watch Ultra |
|---|---|---|---|---|
| Storage | Up to 2.3 GB available for music | 64 GB | Not specified | 32 GB |
| Operating system | Zepp OS 3.5 | Zepp OS 6 | Zepp OS 6 | Wear OS 5; One UI 6 Watch |
| Processor | Not specified | Not specified | Not specified | Exynos W1000, 3 nm |
| CPU | Not specified | Not specified | Not specified | 5-core |
| GPU | Not specified | Not specified | Not specified | Mali-G68 |
| RAM | Not specified | Not specified | Not specified | 2 GB |
| Specification | AmazFit T-Rex Ultra | Amazfit Balance 3 | Amazfit T-Rex 3 Pro | Samsung Galaxy Watch Ultra |
|---|---|---|---|---|
| Wi-Fi | 2.4 GHz Wi-Fi | Wi-Fi 2.4 GHz | Wi-Fi 2.4 GHz | Wi-Fi 2.4 GHz + 5 GHz |
| Bluetooth | Bluetooth 5.0 BLE | Bluetooth 5.2 BLE | Bluetooth 5.2 BLE | Bluetooth 5.3 |
| Positioning / GNSS | Built-in dual-band L1/L5 positioning; six satellite systems | Dual-band GNSS; 6 satellite systems; circularly polarized antenna | Dual-band GNSS; 6 satellite systems; circularly polarized antenna | Dual-frequency GPS, L1 + L5; GLONASS; BeiDou; Galileo |
| Network / cellular | Not specified | Not specified | Not specified | GSM / HSPA / LTE |
| SIM / eSIM | Not specified | Not specified | Not specified | eSIM |
| NFC | Not specified | Not specified | Not specified | Supported |
| Specification | AmazFit T-Rex Ultra | Amazfit Balance 3 | Amazfit T-Rex 3 Pro | Samsung Galaxy Watch Ultra |
|---|---|---|---|---|
| Speaker | No built-in speaker; audio through connected Bluetooth headphones | Supported | Supported | Supported |
| Microphone | Not specified | Supported | Supported | Supported |
| Calling | Not specified | Bluetooth calling | Bluetooth calling | Bluetooth calling with a connected smartphone; standalone calling on LTE editions |
| Specification | AmazFit T-Rex Ultra | Amazfit Balance 3 | Amazfit T-Rex 3 Pro | Samsung Galaxy Watch Ultra |
|---|---|---|---|---|
| Sensors | BioTracker PPG biometric sensor with SpO₂; accelerometer; gyroscope; geomagnetic sensor; barometric altimeter; ambient-light sensor | BioTracker 6.0 PPG; 5 PD + 2 LED; accelerometer; gyroscope; ambient light; geomagnetic sensor; temperature; barometric altimeter | BioTracker 6.0 PPG; accelerometer; gyroscope; geomagnetic sensor; barometric altimeter; ambient light; temperature | Samsung BioActive: optical heart-rate, electrical heart signal, bioelectrical impedance analysis; temperature; accelerometer; barometer; gyroscope; geomagnetic; light sensor |
| Health & wellness features | 24-hour heart-rate, blood-oxygen and stress monitoring; one-tap measurement; PAI; breathing exercises; health alerts | 24-hour heart rate, SpO₂ and stress; skin temperature; one-tap measurement; high and low heart-rate alerts; low SpO₂ alerts; breathing exercises; PAI; heart-rate recovery; menstrual-cycle tracking | 24-hour heart rate, SpO₂ and stress; one-tap measurement; PAI; breathing exercises; high and low heart-rate alerts; low SpO₂ alerts; high-altitude SpO₂ reminders; skin temperature; HybridCharge | Heart-rate monitoring, ECG, blood pressure, body composition, blood oxygen, skin temperature and Energy Score; availability varies by market and paired phone |
| Sleep tracking | Sleep stages including REM; naps; sleep schedule; breathing quality; sleep score | Sleep HRV; sleep stages including REM; naps; sleep schedule; breathing quality; sleep score | Sleep stages including REM; naps; sleep breathing quality; sleep score | Sleep tracking, sleep coaching and sleep-apnoea features where available |
| Sports / workout modes | 162 sports modes; smart recognition of 25 strength movements and 8 sports movements; freediving workouts | 180+ sports modes | 187 sports modes | Multiple workout modes including multisport and automatic workout detection |
| Training & outdoor features | Offline maps and route navigation; Zepp Coach; PeakBeats; Track Run; trajectory correction; Virtual Pacer; training templates and intervals; external heart-rate belt and cycling power meter; altitude, sun, moon and tide tools | Zepp Coach; PeakBeats; training templates; interval training; track running; trajectory correction; virtual pacer; HYROX templates; lactate threshold; running power; ground-contact time; running gear management; HybridCharge; LifeLoad | Zepp Coach; PeakBeats; training templates; interval training; track running; trajectory correction; virtual pacer; offline maps; turn-by-turn navigation; route import; return navigation; route-deviation alerts; altitude assistant; compass; sunrise and sunset; moon phase; tides; storm warnings; contour and ski maps; POI search; route planning; round-trip routing; auto rerouting; HYROX Virtual Pace | Dual-frequency GPS; GPX routes; Track Back; personalised heart-rate zones; Functional Threshold Power |
| Safety & emergency features | Storm warnings; altitude blood-oxygen reminders; abnormal heart-rate, low-SpO₂ and high-stress alerts | Red/white flashlight with SOS mode; abnormal high/low heart-rate, low-SpO2 and high-stress alerts; phone-call notifications | Not specified | Fall detection, SOS and siren features when configured |
| Diving / depth features | Outdoor and indoor freediving and spearfishing; depth and water-temperature data; rated to 30 m; EN13319 and ISO 6425 diving certifications | Outdoor and indoor freediving, recreational diving and spearfishing workout modes | Freediving to 45 m; recreational scuba-diving mode | Not specified |
| Specification | AmazFit T-Rex Ultra | Amazfit Balance 3 | Amazfit T-Rex 3 Pro | Samsung Galaxy Watch Ultra |
|---|---|---|---|---|
| Battery capacity | 500 mAh rated | 658 mAh rated | 48 mm: 700 mAh; 44 mm: 500 mAh, rated | 590 mAh |
| Battery life | Typical: up to 20 days; saver: 25 days; clock: 50 days; heavy: 9 days; accuracy GPS: 28 h; automatic GPS: 46 h; power-saving GPS: 58 h; endurance GPS: 80 h; low-temperature GPS: 10 h | 21 days typical; 10 days heavy; 7 days AOD; 41 hours accurate GPS; 84 hours GPS power saver | 48 mm: 25 days typical, 10 days heavy, 38 hours accurate GPS, 74 hours GPS power saver; 44 mm: 17 days typical, 8 days heavy, 26 hours accurate GPS, 51 hours GPS power saver | Up to 80 hours with Always-On Display off; up to 60 hours with Always-On Display on; up to 100 hours in Power Saving Mode |
| Charging | Magnetic charging base; approximately 2 hours | Magnetic charging head | Magnetic charging head | Fast wireless charging, WPC-based |
| Water resistance | 10 ATM; ISO 22810:2010 | 10 ATM | 10 ATM | 10 ATM; IP68 |
| Durability / certifications | Mud-resistant design; ultra-low-temperature mode down to −30 °C; SGS-certified 10 ATM testing; EN13319 and ISO 6425 diving certifications | Low pressure; high and low temperature; temperature shock; vibration; impact tests | Rugged outdoor construction with Grade 5 titanium controls and sapphire glass | MIL-STD-810H |
| Specification | AmazFit T-Rex Ultra | Amazfit Balance 3 | Amazfit T-Rex 3 Pro | Samsung Galaxy Watch Ultra |
|---|---|---|---|---|
| Phone compatibility | Android 7.0 or later; iOS 12.0 or later | Android 8 or later; iOS 17 or later | Android 7 or later; iOS 15 or later | Android 11.0 or later; more than 1.5 GB RAM |
| Companion app | Zepp App | Zepp | Zepp | Galaxy Wearable; Samsung Health |
| Colors | Abyss Black; Sahara | Stainless Steel; Titanium Black | 48 mm: Tactical Black, Black Gold; 44 mm: Arctic Gold, Black Gold | Titanium Silver; Titanium Gray; Titanium White |
| Specification | AmazFit T-Rex Ultra | Amazfit Balance 3 | Amazfit T-Rex 3 Pro | Samsung Galaxy Watch Ultra |
|---|---|---|---|---|
| Case material | Not specified | Stainless steel or Grade 5 titanium | Fibre-reinforced polymer; Grade 5 titanium bezel | Titanium |
| Pixels per inch | Not specified | 323 ppi | 48 mm: 322 ppi; 44 mm: 353 ppi | Not specified |
| Peak brightness | Not specified | 3,000 nits peak | 3,000 nits peak | Not specified |
| Packing list | Not specified | Watch with standard strap; magnetic charging head; instruction manual | Watch with standard strap; magnetic charging head; instruction manual | Not specified |
| Smart recognition | Not specified | 25 strength-training movements; 8 sports movements | 25 strength-training movements; 8 sports movements | Not specified |
| Third-party fitness apps | Not specified | Runna; Strava; TrainingPeaks; Apple Health; Google Fit; Intervals.icu | Strava; adidas Running; TrainingPeaks; komoot; Relive; Google Fit; Apple Health | Not specified |
| Flashlight | Not specified | Not specified | Red and white LED flashlight | Not specified |
| Release status | Not specified | Not specified | Not specified | Available. Released 2024, July 24 |
| Model numbers | Not specified | Not specified | Not specified | SM-L705F, SM-L705N, SM-L705U |
| Card slot | Not specified | Not specified | Not specified | No |
| Camera | Not specified | Not specified | Not specified | No |
| 3.5 mm headphone jack | Not specified | Not specified | Not specified | No |
| USB | Not specified | Not specified | Not specified | No |
| Radio | Not specified | Not specified | Not specified | No |
| 2G bands | Not specified | Not specified | Not specified | GSM 850 / 900 / 1800 / 1900 |
| 3G bands | Not specified | Not specified | Not specified | HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 |
| 4G bands | Not specified | Not specified | Not specified | 1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 18, 19, 20, 25, 26, 28, 40, 66, 71 |
| Network speed | Not specified | Not specified | Not specified | HSPA, LTE |
| SAR (EU) | Not specified | Not specified | Not specified | 0.11 W/kg (head) 0.36 W/kg (body) |
AmazFit T-Rex Ultra specifications
| Brand | Amazfit |
|---|---|
| Model | Amazfit T-Rex Ultra |
| Dimensions | 47.3 × 47.3 × 13.45 mm, excluding heart-rate sensor base |
| Weight | 89 g without strap |
| Build materials | 316L stainless-steel bezel, back panel, bridge and buttons; polymer-alloy middle frame |
| Wrist size | 140–205 mm |
| Strap / band | 22 mm silicone strap with classic pin buckle |
| Controls / buttons | Four physical buttons; glass touchscreen |
| Display | 1.39-inch AMOLED |
|---|---|
| Screen resolution | 454 × 454 pixels, 326 ppi |
| Display protection | Glass |
| Display features | Up to 1,000 nits; Always-On Display; 120+ watch faces |
| Storage | Up to 2.3 GB available for music |
|---|---|
| Operating system | Zepp OS 3.5 |
| Wi-Fi | 2.4 GHz Wi-Fi |
|---|---|
| Bluetooth | Bluetooth 5.0 BLE |
| Positioning / GNSS | Built-in dual-band L1/L5 positioning; six satellite systems |
| Speaker | No built-in speaker; audio through connected Bluetooth headphones |
|---|
| Sensors | BioTracker PPG biometric sensor with SpO₂; accelerometer; gyroscope; geomagnetic sensor; barometric altimeter; ambient-light sensor |
|---|---|
| Health & wellness features | 24-hour heart-rate, blood-oxygen and stress monitoring; one-tap measurement; PAI; breathing exercises; health alerts |
| Sleep tracking | Sleep stages including REM; naps; sleep schedule; breathing quality; sleep score |
| Sports / workout modes | 162 sports modes; smart recognition of 25 strength movements and 8 sports movements; freediving workouts |
| Training & outdoor features | Offline maps and route navigation; Zepp Coach; PeakBeats; Track Run; trajectory correction; Virtual Pacer; training templates and intervals; external heart-rate belt and cycling power meter; altitude, sun, moon and tide tools |
| Safety & emergency features | Storm warnings; altitude blood-oxygen reminders; abnormal heart-rate, low-SpO₂ and high-stress alerts |
| Diving / depth features | Outdoor and indoor freediving and spearfishing; depth and water-temperature data; rated to 30 m; EN13319 and ISO 6425 diving certifications |
| Battery capacity | 500 mAh rated |
|---|---|
| Battery life | Typical: up to 20 days; saver: 25 days; clock: 50 days; heavy: 9 days; accuracy GPS: 28 h; automatic GPS: 46 h; power-saving GPS: 58 h; endurance GPS: 80 h; low-temperature GPS: 10 h |
| Charging | Magnetic charging base; approximately 2 hours |
| Water resistance | 10 ATM; ISO 22810:2010 |
| Durability / certifications | Mud-resistant design; ultra-low-temperature mode down to −30 °C; SGS-certified 10 ATM testing; EN13319 and ISO 6425 diving certifications |
| Phone compatibility | Android 7.0 or later; iOS 12.0 or later |
|---|---|
| Companion app | Zepp App |
| Colors | Abyss Black; Sahara |
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