Amazfit Balance 2 vs Amazfit T-Rex ProSize, Specs & Wrist Fit Compared
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Amazfit
Balance 2
Amazfit
T-Rex Pro
Which one fits you
Both need much the same wrist — roughly 50–68mm across the flat of the wrist. Neither will fit where the other won't, so decide on thickness, weight and features instead.
The Amazfit Balance 2 and Amazfit T-Rex Pro share a near-identical 47.4mm case, so wrist presence comes down to thickness, lug-to-lug and weight.
The Amazfit Balance 2 is the slimmer of the two (12.3mm vs 13.5mm), so it slides under a cuff more easily.
On the wrist the Amazfit Balance 2 feels lighter (43g vs 59.4g, case only).
Among the 83 47mm watches we hold thickness for, the Amazfit Balance 2 is thinner than 81%, so it wears flatter than its width suggests.
Among the 52 48mm watches we hold thickness for, the Amazfit T-Rex Pro is thinner than 69%, so it wears flatter than its width suggests.
Specification Comparison
| Spec | AmazfitBalance 2 | AmazfitT-Rex Pro |
|---|---|---|
| Case Width | 47.4mm | 47.7mm |
| Thickness | 12.3mm | 13.5mm |
| Weight | 43g | 59.4g |
| Shape | Circular | Circular |
| Water Resistance | 10 ATM | 10 ATM |
| GPS | 33 hours | 40 hours |
| Display | 1.5 inches | 1.3 inches |
| Always-On Display | Yes | Yes |
| Battery life | 21 days | 18 days |
| Battery power | 658 mAh | 390 mAh |
| Has wireless charging | No | Yes |
| Has a removable battery | No | No |
| Battery life with GPS on | 33 hours | 40 hours |
| Has a solar power battery | No | No |
| Has a rechargeable battery | Yes | Yes |
| Battery life in training mode | 240 hours | — |
| Battery life in power save mode | 67 hours | — |
| Has a battery level indicator | Yes | Yes |
| Charge time | — | 1.5 hours |
| Released | 2025 | 2021 |
Battery life compared
The two are closest in everyday use and furthest apart in GPS mode, where one lasts 1.2× as long as the other (40 hours against 33 hours).
Amazfit Balance 2Amazfit T-Rex Pro
Smartwatch
21 days18 daysTraining
240 hours—Battery Saver
67 hours—GPS
33 hours40 hours
Full Specification Comparison
122 specs| Spec | Amazfit Balance 2 | Amazfit T-Rex Pro |
|---|---|---|
| Design | ||
| width | 47.4 | 47.7 |
| height | 47.4 | 47.7 |
| volume | 27.64 cm³ | 30.72 cm³ |
| weight | 43 g | 59.4 g |
| thickness | 12.3 | 13.5 |
| ATM rating | 10 ATM | 10 ATM |
| resolution | 480 x 480 px | 360 x 360 px |
| screen size | 1.5 inches | 1.3 inches |
| Display type | OLED/AMOLED | OLED/AMOLED |
| Has a display | Yes | Yes |
| pixel density | 323 ppi | 391.6 ppi |
| width of band | 22 mm | 22 mm |
| water resistance | Waterproof | Waterproof |
| Always-On Display | Yes | Yes |
| has a touch screen | Yes | Yes |
| is designed for kids | No | — |
| waterproof depth rating | 45 m | 100 m |
| Watch band is replaceable | Yes | Yes |
| Has sapphire glass display | Yes | No |
| Ingress Protection (IP) rating | IP68 | — |
| has branded damage-resistant glass | No | No |
| Gorilla Glass version | — | Gorilla Glass 3 |
| maximum operating temperature | — | 70 °C |
| lowest potential operating temperature | — | -40 °C |
| Battery | ||
| battery life | 21 days | 18 days |
| battery power | 658 mAh | 390 mAh |
| has wireless charging | No | Yes |
| has a removable battery | No | No |
| battery life with GPS on | 33 hours | 40 hours |
| Has a solar power battery | No | No |
| has a rechargeable battery | Yes | Yes |
| battery life in training mode | 240 hours | — |
| battery life in power save mode | 67 hours | — |
| charge time | — | 1.5 hours |
| Sensors | ||
| has GPS | Yes | Yes |
| has a compass | Yes | Yes |
| Has a barometer | Yes | Yes |
| has a gyroscope | Yes | Yes |
| Has a cadence sensor | No | No |
| has an accelerometer | Yes | Yes |
| Monitors perspiration | No | No |
| Has a heart rate monitor | Yes | Yes |
| Has a temperature sensor | Yes | No |
| Monitors blood oxygenation levels | Yes | Yes |
| Features | ||
| release date | 2025-06-24 | 2021-03-27 |
| Has a stopwatch | Yes | Yes |
| Has smart alarm | No | No |
| warranty period | 1 years | 1 years |
| Has call control | Yes | Yes |
| Has silent alarm | Yes | Yes |
| has HRV tracking | Yes | Yes |
| internal storage | 32GB | — |
| measures VO2 max | Yes | Yes |
| Has notifications | Yes | Yes |
| Has ECG technology | No | No |
| Locates your phone | Yes | Yes |
| has a front camera | No | No |
| has fall detection | No | No |
| has voice commands | Yes | No |
| Acquires GPS faster | Yes | Yes |
| Has vibrating alerts | Yes | Yes |
| number of microphones | 1 | — |
| shows readiness level | Yes | Yes |
| Can be used to answer calls | Yes | No |
| measures resting heart rate | Yes | Yes |
| has irregular heart rate warnings | No | Yes |
| has fast/slow heart rate notifications | Yes | Yes |
| Has a built-in camera remote control function | Yes | No |
| Connectivity | ||
| has NFC | Yes | No |
| Wi-Fi version | Wi-Fi 4 (802.11n) | — |
| supports ANT+ | No | No |
| supports Wi-Fi | Yes | No |
| supports Galileo | Yes | Yes |
| Bluetooth version | 5.2 | 5 |
| has a cellular module | No | No |
| Is compatible with iOS | Yes | Yes |
| Is compatible with Android | Yes | Yes |
| Miscellaneous | ||
| Has passcode | Yes | Yes |
| Has auto pause | Yes | Yes |
| Is compatible with Windows | No | No |
| Is compatible with Mac OS X | No | No |
| has an external memory slot | No | No |
| Compatible with smart scales | Yes | Yes |
| has a battery level indicator | Yes | Yes |
| has a socket for a 3.5 mm audio jack | No | No |
| Compatible with external heart rate monitors | Yes | Yes |
| has aptX | — | No |
| App & Software | ||
| Ad-free | Yes | Yes |
| Free app | Yes | Yes |
| Tracks BMI | Yes | Yes |
| Has coaching | Yes | Yes |
| Includes maps | Yes | Yes |
| Supports routes | Yes | Yes |
| Has achievements | Yes | Yes |
| Has goal setting | Yes | Yes |
| Has live tracking | Yes | Yes |
| Has exercise diary | Yes | Yes |
| Predicts ovulation | Yes | Yes |
| Can be personalised | Yes | Yes |
| Has weight tracking | Yes | Yes |
| Predicts start date | Yes | Yes |
| Tracks water intake | Yes | Yes |
| Has inactivity alerts | Yes | Yes |
| Has period notifications | Yes | Yes |
| Has temperature tracking | Yes | No |
| Provides activity reports | Yes | Yes |
| Displays fertile window notifications | Yes | Yes |
| Counts how many calories you've burned | Yes | Yes |
| Activity tracking | ||
| Measures pace | Yes | Yes |
| Tracks distance | Yes | Yes |
| Tracks elevation | Yes | Yes |
| Designed for golf | Yes | No |
| Tracks your sleep | Yes | Yes |
| Tracks steps taken | Yes | Yes |
| Designed for diving | Yes | No |
| Has a route tracker | Yes | No |
| Has exercise tagging | Yes | Yes |
| Has multi-sport mode | Yes | Yes |
| Tracks calorie intake | Yes | Yes |
| Provides sleep reports | Yes | Yes |
| Detects activities automatically | Yes | Yes |
| Has a stroke counter for swimming | Yes | Yes |
Wrist Fit
Amazfit Balance 2
Sits best on wrists ~50–68mm wide (≈ 13.4–18.2cm circumference).
Amazfit T-Rex Pro
Sits best on wrists ~50–68mm wide (≈ 13.4–18.2cm circumference).
2D Dimension Schematics
Accurate scale drawings based on case dimensions. Drag to pan, Ctrl+scroll to zoom. Works for every watch regardless of photo availability.
Frequently Asked Questions
Is the Amazfit Balance 2 bigger than the Amazfit T-Rex Pro?
The Amazfit T-Rex Pro is bigger — 47.7mm vs 47.4mm case width.
Which fits a smaller wrist better, the Amazfit Balance 2 or the Amazfit T-Rex Pro?
The Amazfit Balance 2 suits wrists around 50–68mm wide, and the Amazfit T-Rex Pro around 50–68mm. The one with the smaller lower bound is the safer pick for a small wrist.
Can I see the Amazfit Balance 2 and Amazfit T-Rex Pro side by side at true scale?
Yes — the schematics and photos above show both watches at matched scale, and our fit tool overlays each on your wrist width.