Amazfit Cheetah Square vs Garmin Instinct 3 Solar Tactical Edition 45mmSize, Specs & Wrist Fit Compared
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Amazfit
Cheetah Square
Garmin
Instinct 3 Solar Tactical Edition 45mm
Which one fits you
Both need much the same wrist — roughly 46–64mm across the flat of the wrist. Neither will fit where the other won't, so decide on thickness, weight and features instead.
The Garmin Instinct 3 Solar Tactical Edition 45mm wears larger than the Amazfit Cheetah Square (45mm vs 38.7mm case), giving it more wrist presence — and needing a wider wrist to sit cleanly.
The Amazfit Cheetah Square is the slimmer of the two (9.9mm vs 14.9mm), so it slides under a cuff more easily.
On the wrist the Amazfit Cheetah Square feels lighter (37g vs 52g, case only).
Among the 339 39mm watches we hold thickness for, the Amazfit Cheetah Square is thinner than 74%, so it wears flatter than its width suggests.
Among the 386 45mm watches we hold thickness for, the Garmin Instinct 3 Solar Tactical Edition 45mm is thicker than 83% — it will sit high even though the case width reads modest.
Specification Comparison
| Spec | AmazfitCheetah Square | GarminInstinct 3 Solar Tactical Edition 45mm |
|---|---|---|
| Case Width | 38.7mm | 45mm |
| Lug-to-Lug | 44mm | 45mm |
| Thickness | 9.9mm | 14.9mm |
| Weight | 37g | 52g |
| Shape | Rectangle | Circular |
| Water Resistance | 5 ATM | 10 ATM |
| GPS | 13 hours | 130 hours |
| Display | 1.75 inches | 0.9 inches |
| Always-On Display | Yes | Yes |
| Charge time | 2 hours | — |
| Battery life | 8 days | Unlimited days |
| Battery power | 240 mAh | — |
| Has wireless charging | No | No |
| Has a removable battery | No | No |
| Battery life with GPS on | 13 hours | 130 hours |
| Has a solar power battery | No | Yes |
| Has a rechargeable battery | Yes | Yes |
| Battery life in power save mode | 28 hours | — |
| Has a battery level indicator | Yes | Yes |
| Battery life in training mode | — | 40 hours |
| Released | 2023 | 2025 |
Battery life compared
The two are closest in everyday use and furthest apart in GPS mode, where one lasts 10.0× as long as the other (5.4 days against 13 hours).
Amazfit Cheetah SquareGarmin Instinct 3 Solar Tactical Edition 45mm
Smartwatch
8 days—GPS
13 hours130 hoursTraining
—40 hoursBattery Saver
28 hours—
Full Specification Comparison
122 specs| Spec | Amazfit Cheetah Square | Garmin Instinct 3 Solar Tactical Edition 45mm |
|---|---|---|
| Design | ||
| width | 38.7 | 45 |
| height | 44 | 45 |
| volume | 16.86 cm³ | 30.17 cm³ |
| weight | 37 g | 52 g |
| thickness | 9.9 | 14.9 |
| ATM rating | 5 ATM | 10 ATM |
| resolution | 390 x 450 px | 176 x 176 px |
| screen size | 1.75 inches | 0.9 inches |
| Display type | OLED/AMOLED | LCD |
| Has a display | Yes | Yes |
| pixel density | 341 ppi | 276 ppi |
| width of band | 20 mm | 22 mm |
| water resistance | Waterproof | Waterproof |
| Always-On Display | Yes | Yes |
| has a touch screen | Yes | No |
| is designed for kids | No | — |
| waterproof depth rating | 50 m | — |
| Watch band is replaceable | Yes | Yes |
| Has sapphire glass display | No | No |
| Ingress Protection (IP) rating | IP68 | — |
| has branded damage-resistant glass | No | No |
| Battery | ||
| charge time | 2 hours | — |
| battery life | 8 days | Unlimited days |
| battery power | 240 mAh | — |
| has wireless charging | No | No |
| has a removable battery | No | No |
| battery life with GPS on | 13 hours | 130 hours |
| Has a solar power battery | No | Yes |
| has a rechargeable battery | Yes | Yes |
| battery life in power save mode | 28 hours | — |
| battery life in training mode | — | 40 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 | Yes |
| has an accelerometer | Yes | Yes |
| Monitors perspiration | No | No |
| Has a heart rate monitor | Yes | Yes |
| Has a temperature sensor | No | Yes |
| Monitors blood oxygenation levels | Yes | Yes |
| Features | ||
| release date | 2023-06-22 | 2025-04-30 |
| Has a stopwatch | Yes | Yes |
| Has smart alarm | No | No |
| warranty period | 1 years | 1 years |
| Has call control | No | No |
| Has silent alarm | Yes | Yes |
| measures VO2 max | Yes | Yes |
| Has notifications | Yes | Yes |
| Has ECG technology | No | — |
| Locates your phone | Yes | Yes |
| has fall detection | No | Yes |
| has voice commands | Yes | No |
| Has vibrating alerts | Yes | Yes |
| Can be used to answer calls | No | No |
| has irregular heart rate warnings | Yes | No |
| Has a built-in camera remote control function | Yes | No |
| has HRV tracking | — | Yes |
| internal storage | — | 0.13GB |
| Acquires GPS faster | — | Yes |
| shows readiness level | — | Yes |
| measures resting heart rate | — | Yes |
| has fast/slow heart rate notifications | — | Yes |
| Connectivity | ||
| has NFC | No | Yes |
| supports ANT+ | No | Yes |
| supports Wi-Fi | Yes | No |
| supports Galileo | Yes | Yes |
| Bluetooth version | 5.3 | — |
| has a cellular module | No | No |
| Is compatible with iOS | Yes | Yes |
| Is compatible with Android | Yes | Yes |
| Miscellaneous | ||
| Has passcode | Yes | — |
| Has auto pause | Yes | Yes |
| Is compatible with Windows | No | Yes |
| Is compatible with Mac OS X | No | Yes |
| 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 |
| Available on PC | — | Yes |
| Can upload maps | — | No |
| Has trackback mode | — | Yes |
| Has a wind speed sensor | — | No |
| Provides the sunrise/sunset time | — | Yes |
| Informs about the risk of thunderstorms | — | Yes |
| 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 | No | Yes |
| Provides activity reports | Yes | Yes |
| Displays fertile window notifications | Yes | Yes |
| Counts how many calories you've burned | Yes | Yes |
| Doesn’t require account | — | No |
| Activity tracking | ||
| Measures pace | Yes | Yes |
| Tracks distance | Yes | Yes |
| Tracks elevation | Yes | Yes |
| Designed for golf | No | Yes |
| Tracks your sleep | Yes | Yes |
| Tracks steps taken | Yes | Yes |
| Designed for diving | No | No |
| Has a route tracker | Yes | Yes |
| 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 | No | Yes |
Wrist Fit
Amazfit Cheetah Square
Sits best on wrists ~46–63mm wide (≈ 12.3–16.8cm circumference).
Garmin Instinct 3 Solar Tactical Edition 45mm
Sits best on wrists ~47–64mm wide (≈ 12.6–17.1cm 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 Cheetah Square bigger than the Garmin Instinct 3 Solar Tactical Edition 45mm?
The Garmin Instinct 3 Solar Tactical Edition 45mm is bigger — 45mm vs 38.7mm case width.
Which fits a smaller wrist better, the Amazfit Cheetah Square or the Garmin Instinct 3 Solar Tactical Edition 45mm?
The Amazfit Cheetah Square suits wrists around 46–63mm wide, and the Garmin Instinct 3 Solar Tactical Edition 45mm around 47–64mm. The one with the smaller lower bound is the safer pick for a small wrist.
Can I see the Amazfit Cheetah Square and Garmin Instinct 3 Solar Tactical Edition 45mm 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.