Samsung Galaxy Watch Ultra vs Amazfit T-Rex 3 Smartwatch
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General
| Brand | Samsung | Amazfit |
| Model | SM-L705FZB1 | |
| Model Name | Galaxy Watch Ultra 2025 | T-Rex 3 |
| Sim | Yes, e-Sim | |
| Ideal For | Men, Women | Men, Women |
| Sales Package | Smartwatch, Charger, User Manual | Smartwatch, Charger, User Manual |
Design and Body
| Weight | 61.5 g | 68.3 g |
| Material | Titanium | Stainless steel bezel, Polymer middle frame |
| Strap | 22mm Liquid silicone | |
| Shape | Squicircle | Circle |
| Water Resistant | Yes | Yes |
| Water Resistant Depth | 100 m | 100 m |
| Water Resistant Certificate | 10ATM / IP68 / MIL-STD-810H | 10ATM |
| Dust Proof | Yes | Yes |
| Scratch Resistant | Yes | Yes |
Display
| Type | Color Super AMOLED | Color AMOLED |
| Touch | Yes, Multi Touch | Yes |
| Size | 1.47 inches | 1.5 inches |
| Resolution | 480 x 480 pixels | 480 x 480 pixels |
| PPI | 327 ppi | 322 ppi |
| Ambient Light Sensor | Yes | Yes |
| Always On Display | Yes | Yes |
| Glass Type | Sapphire Crystal Glass | Gorilla Glass |
| Features | 2000 Nits Brightness |
Memory
| RAM | 2 GB | |
| Inbuilt Memory | 64 GB |
Connectivity
| Wi-Fi | Yes, 802.11a/b/g/n 2.4GHz+5GHz | Yes, Wi-Fi 2.4GHz |
| Voice Calling | Yes | |
| Bluetooth | Yes, 5.3 | Yes, 5.2 |
| GPS | Yes | Yes |
| 3G | Yes | |
| 4G | Yes | |
| VoLTE | Yes |
Extra
| NFC | Yes | Yes |
| Gesture Control | Yes | Yes |
| Gyroscope | Yes | Yes |
| Voice Assistant | Yes | Yes |
| Inbuilt Microphone | Yes | Yes |
| Inbuilt Speaker | Yes | Yes |
| Notifications | Yes | Yes |
| Extra Features | Emergency SOS, Quick Button, Google Map Navigation | 177 Workout Modes, 400 Watch Faces, Map and Navigation, Music and Camera Control, Find My Phone, Weather, Screen Lock & Password, Do Not Disturb |
Technical
| OS | Wear OS | Zepp OS 4 |
| Compatible OS | Android | Android 7.0 and above, iOS 14.0 and above |
| CPU | Exynos W1000 |
Battery
| Battery Capacity | 590 mAh | 700 mAh |
| Removable Battery | Non-Removable Battery | Non-Removable Battery |
| Charging Time | 3 hours | |
| Fast Charging | Yes | |
| Wireless Charging | Yes | |
| StandBy Time | 27 days |
Fitness Features and Sensors
| Heart Rate Monitor | Yes | Yes |
| SpO2 (Blood Oxygen) Monitor | Yes | Yes |
| BP Monitor | Yes | |
| Temperature Sensor | Yes | Yes |
| Pedometer | Yes | Yes |
| Altimeter | Yes | Yes |
| Compass | Yes | Yes |
| Sleep Monitor | Yes | Yes |
| Reminder | Yes | Yes, Sedentary Reminders |
| Meters and Sensors | Accelerometer, Calorie Count, Step Count, Barometer, Bioelectrical Impedance Analysis Sensor, Electrical Heart Sensor, Geomagnetic Sensor, Advanced BioActive Sensor | Accelerometer, Calorie Count, Step Count, Geomagnetic, Barometric |
| Extra Features | Alarm Clock, Stopwatch, Timer, Advanced Sleep Coaching (Bedtime Guidance) / BIA (Bioelectrical Impedance Analysis) / ECG / Irregular Heart Rhythm Notification Personalized Heart Rate Zones / Continuous SpO2 / Skin Temperature / Sleep Apnea / Energy Score / Vascular Load / Antioxidant Index / Running Coach | Alarm Clock, Stopwatch, Timer, BioTracker PPG biometric sensor |
Warranty
| Warranty | 1 year, Brand Warranty |
Discuss
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