Amazfit Active Edge vs Garmin Instinct 3 Solar Tactical Edition 45mmSize, Specs & Wrist Fit Compared
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Amazfit
Active Edge
Garmin
Instinct 3 Solar Tactical Edition 45mm
Which one fits you
On wrists narrower than about 49mm, the Garmin Instinct 3 Solar Tactical Edition 45mm is the safer pick — it stays proportionate down to roughly 47mm, where the Amazfit Active Edge starts to hang over the edge. Above 49mm both sit cleanly, and the Amazfit Active Edge gives you more presence.
The Amazfit Active Edge wears larger than the Garmin Instinct 3 Solar Tactical Edition 45mm (46.6mm vs 45mm case), giving it more wrist presence — and needing a wider wrist to sit cleanly.
The Amazfit Active Edge is the slimmer of the two (12mm vs 14.9mm), so it slides under a cuff more easily.
On the wrist the Amazfit Active Edge feels lighter (34g vs 52g, case only).
Among the 117 47mm watches we hold thickness for, the Amazfit Active Edge is thinner than 68%, 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 | AmazfitActive Edge | GarminInstinct 3 Solar Tactical Edition 45mm |
|---|---|---|
| Case Width | 46.6mm | 45mm |
| Thickness | 12mm | 14.9mm |
| Weight | 34g | 52g |
| Shape | Circular | Circular |
| Water Resistance | 10 ATM | 10 ATM |
| GPS | 20 hours | 130 hours |
| Display | 1.32 inches | 0.9 inches |
| Always-On Display | No | Yes |
| Charge time | 2 hours | — |
| Battery life | 16 days | Unlimited days |
| Battery power | 370 mAh | — |
| Has wireless charging | No | No |
| Has a removable battery | No | No |
| Battery life with GPS on | 20 hours | 130 hours |
| Has a solar power battery | No | Yes |
| Has a rechargeable battery | Yes | Yes |
| Battery life in training mode | 240 hours | 40 hours |
| Battery life in power save mode | 576 hours | — |
| Has a battery level indicator | Yes | Yes |
| Released | 2023 | 2025 |
Battery life compared
The two are closest in everyday use and furthest apart in GPS mode, where one lasts 6.5× as long as the other (5.4 days against 20 hours).
Amazfit Active EdgeGarmin Instinct 3 Solar Tactical Edition 45mm
Battery Saver
576 hours—Smartwatch
16 days—Training
240 hours40 hoursGPS
20 hours130 hours
Full Specification Comparison
124 specs| Spec | Amazfit Active Edge | Garmin Instinct 3 Solar Tactical Edition 45mm |
|---|---|---|
| Design | ||
| width | 46.6 | 45 |
| height | 46.6 | 45 |
| volume | 26.06 cm³ | 30.17 cm³ |
| weight | 34 g | 52 g |
| thickness | 12 | 14.9 |
| ATM rating | 10 ATM | 10 ATM |
| resolution | 360 x 360 px | 176 x 176 px |
| screen size | 1.32 inches | 0.9 inches |
| Display type | LCD | LCD |
| Has a display | Yes | Yes |
| pixel density | 277 ppi | 276 ppi |
| width of band | 22 mm | 22 mm |
| water resistance | Waterproof | Waterproof |
| Always-On Display | No | Yes |
| has a touch screen | Yes | No |
| is designed for kids | No | — |
| waterproof depth rating | 100 m | — |
| Watch band is replaceable | Yes | Yes |
| Has sapphire glass display | No | No |
| maximum operating temperature | 45 °C | — |
| Ingress Protection (IP) rating | IP68 | — |
| has branded damage-resistant glass | No | No |
| lowest potential operating temperature | 0 °C | — |
| Battery | ||
| charge time | 2 hours | — |
| battery life | 16 days | Unlimited days |
| battery power | 370 mAh | — |
| has wireless charging | No | No |
| has a removable battery | No | No |
| battery life with GPS on | 20 hours | 130 hours |
| Has a solar power battery | No | Yes |
| has a rechargeable battery | Yes | Yes |
| battery life in training mode | 240 hours | 40 hours |
| battery life in power save mode | 576 hours | — |
| Sensors | ||
| has GPS | Yes | Yes |
| has a compass | No | Yes |
| Has a barometer | No | Yes |
| has a gyroscope | 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 |
| Has a cadence sensor | — | Yes |
| Features | ||
| release date | 2023-10-27 | 2025-04-30 |
| Has a stopwatch | Yes | Yes |
| Has smart alarm | No | No |
| warranty period | 1 years | 1 years |
| Has call control | Yes | 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 | No | No |
| Acquires GPS faster | Yes | Yes |
| Has vibrating alerts | Yes | Yes |
| Can be used to answer calls | No | No |
| measures resting heart rate | Yes | Yes |
| has irregular heart rate warnings | No | No |
| Has a built-in camera remote control function | Yes | No |
| has HRV tracking | — | Yes |
| internal storage | — | 0.13GB |
| shows readiness level | — | Yes |
| has fast/slow heart rate notifications | — | Yes |
| Connectivity | ||
| has NFC | No | Yes |
| supports ANT+ | No | Yes |
| supports Wi-Fi | No | No |
| supports Galileo | Yes | Yes |
| Bluetooth version | 5 | — |
| 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 |
| Tracks calorie intake | Yes | Yes |
| Provides sleep reports | Yes | Yes |
| Detects activities automatically | Yes | Yes |
| Has a stroke counter for swimming | Yes | Yes |
| Has multi-sport mode | — | Yes |
Wrist Fit
Amazfit Active Edge
Sits best on wrists ~49–67mm wide (≈ 13.1–17.9cm 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 Active Edge bigger than the Garmin Instinct 3 Solar Tactical Edition 45mm?
The Amazfit Active Edge is bigger — 46.6mm vs 45mm case width.
Which fits a smaller wrist better, the Amazfit Active Edge or the Garmin Instinct 3 Solar Tactical Edition 45mm?
The Amazfit Active Edge suits wrists around 49–67mm 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 Active Edge 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.