Amazfit Nexo vs Amazfit Pop 3SSize, Specs & Wrist Fit Compared
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Amazfit
Nexo
Amazfit
Pop 3S
Which one fits you
On wrists narrower than about 37mm, the Amazfit Pop 3S is the safer pick — it stays proportionate down to roughly 13mm, where the Amazfit Nexo starts to hang over the edge. Above 37mm both sit cleanly, and the Amazfit Nexo gives you more presence.
The Amazfit Nexo wears larger than the Amazfit Pop 3S (35.4mm vs 11mm case), giving it more wrist presence — and needing a wider wrist to sit cleanly.
The Amazfit Pop 3S is the slimmer of the two (11.5mm vs 13.7mm), so it slides under a cuff more easily.
On the wrist the Amazfit Nexo feels lighter (49g vs 57g, case only).
Among the 105 35mm watches we hold thickness for, the Amazfit Nexo is thicker than 96% — it will sit high even though the case width reads modest.
Specification Comparison
| Spec | AmazfitNexo | AmazfitPop 3S |
|---|---|---|
| Case Width | 35.4mm | 11mm |
| Lug-to-Lug | 35.4mm | 12.2mm |
| Thickness | 13.7mm | 11.5mm |
| Weight | 49g | 57g |
| Shape | Circular | Rectangle |
| Water Resistance | Waterproof | 5 ATM |
| GPS | Yes | No |
| Display | 1.39 inches | 1.96 inches |
| Always-On Display | Yes | Yes |
| Charge time | 1.5 hours | — |
| Battery life | 28 days | 12 days |
| Battery power | 420 mAh | 300 mAh |
| Has wireless charging | No | — |
| Has a removable battery | No | No |
| Has a solar power battery | No | No |
| Has a rechargeable battery | Yes | Yes |
| Has a battery level indicator | Yes | Yes |
| Released | 2019 | 2023 |
Battery life compared
The two are closest in everyday use and furthest apart in Smartwatch mode, where one lasts 2.3× as long as the other (28 days against 12 days).
Amazfit NexoAmazfit Pop 3S
Smartwatch
28 days12 days
Full Specification Comparison
105 specs| Spec | Amazfit Nexo | Amazfit Pop 3S |
|---|---|---|
| Design | ||
| width | 35.4 | 11 |
| height | 35.4 | 12.2 |
| volume | 17.17 cm³ | 1.54 cm³ |
| weight | 49 g | 57 g |
| thickness | 13.7 | 11.5 |
| resolution | 454 x 454 px | 410 x 502 px |
| screen size | 1.39 inches | 1.96 inches |
| Display type | OLED/AMOLED | OLED/AMOLED |
| Has a display | Yes | Yes |
| pixel density | 326 ppi | 330 ppi |
| width of band | 22 mm | — |
| water resistance | Waterproof | Water resistant |
| Always-On Display | Yes | Yes |
| has a touch screen | Yes | Yes |
| waterproof depth rating | 50 m | — |
| Watch band is replaceable | Yes | Yes |
| Has sapphire glass display | No | No |
| Ingress Protection (IP) rating | IP68 | IP68 |
| has branded damage-resistant glass | Yes | No |
| ATM rating | — | 5 ATM |
| is designed for kids | — | No |
| Battery | ||
| charge time | 1.5 hours | — |
| battery life | 28 days | 12 days |
| battery power | 420 mAh | 300 mAh |
| has wireless charging | No | — |
| has a removable battery | No | No |
| Has a solar power battery | No | No |
| has a rechargeable battery | Yes | Yes |
| Sensors | ||
| has GPS | Yes | No |
| has a compass | Yes | No |
| Has a barometer | Yes | No |
| has a gyroscope | Yes | 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 | No | Yes |
| Has a cadence sensor | — | No |
| Features | ||
| RAM | 0.51GB | 4MB |
| release date | 2019-10-02 | 2023-06-09 |
| Has a stopwatch | Yes | Yes |
| Has smart alarm | No | No |
| Has call control | Yes | Yes |
| Has silent alarm | Yes | Yes |
| internal storage | 1GB | 16MB |
| Has notifications | Yes | Yes |
| Has ECG technology | No | No |
| Locates your phone | No | Yes |
| has fall detection | No | No |
| has voice commands | Yes | Yes |
| Acquires GPS faster | Yes | No |
| Has vibrating alerts | Yes | Yes |
| number of microphones | 1 | — |
| Can be used to answer calls | No | Yes |
| has irregular heart rate warnings | No | No |
| Has a built-in camera remote control function | Yes | Yes |
| warranty period | — | 1 years |
| measures resting heart rate | — | Yes |
| Connectivity | ||
| has NFC | No | No |
| supports Wi-Fi | Yes | No |
| supports Galileo | Yes | No |
| Bluetooth version | 4.2 | — |
| has a cellular module | No | No |
| Is compatible with iOS | Yes | Yes |
| Is compatible with Android | Yes | Yes |
| supports ANT+ | — | No |
| Miscellaneous | ||
| Has passcode | Yes | Yes |
| maximum Bluetooth range | 10 m | — |
| Is compatible with Windows | No | No |
| Is compatible with Mac OS X | No | No |
| has an ambient light sensor | Yes | — |
| has an external memory slot | No | No |
| 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 |
| App & Software | ||
| Ad-free | Yes | Yes |
| Free app | Yes | Yes |
| Tracks BMI | Yes | Yes |
| Supports routes | Yes | Yes |
| Has achievements | Yes | Yes |
| Has goal setting | Yes | Yes |
| Has exercise diary | 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 |
| Counts how many calories you've burned | Yes | Yes |
| Activity tracking | ||
| Measures pace | Yes | Yes |
| Tracks distance | Yes | Yes |
| Tracks elevation | Yes | No |
| Designed for golf | No | 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 | No |
| Tracks calorie intake | Yes | Yes |
| Provides sleep reports | Yes | Yes |
| Detects activities automatically | Yes | Yes |
| Has a stroke counter for swimming | Yes | No |
Wrist Fit
Amazfit Nexo
Sits best on wrists ~37–51mm wide (≈ 9.9–13.6cm circumference).
Amazfit Pop 3S
Sits best on wrists ~13–17mm wide (≈ 3.5–4.5cm 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 Nexo bigger than the Amazfit Pop 3S?
The Amazfit Nexo is bigger — 35.4mm vs 11mm case width.
Which fits a smaller wrist better, the Amazfit Nexo or the Amazfit Pop 3S?
The Amazfit Nexo suits wrists around 37–51mm wide, and the Amazfit Pop 3S around 13–17mm. The one with the smaller lower bound is the safer pick for a small wrist.
Can I see the Amazfit Nexo and Amazfit Pop 3S 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.