Amazfit Pop 3R vs Samsung Galaxy Watch8 - Wi-Fi · 40mmSize, Specs & Wrist Fit Compared
The Amazfit Pop 3R is 5.1mm wider, 2.8mm longer, 2.2mm thicker and 25.5g heavier than the Samsung Galaxy Watch8 - Wi-Fi · 40mm. Both are circular.
Measured against the Amazfit Pop 3R.
- Case width
- 45.5mmbasePop 3R40.4mm−5.1mmGalaxy Watch8 - Wi-Fi · 40mm
- Lug-to-lug
- 45.5mmbasePop 3R42.7mm−2.8mmGalaxy Watch8 - Wi-Fi · 40mm
- Thickness
- 10.8mmbasePop 3R8.6mm−2.2mmGalaxy Watch8 - Wi-Fi · 40mm
- Weight
- 55.5gbasePop 3R30g−25.5gGalaxy Watch8 - Wi-Fi · 40mm
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Amazfit
Pop 3R
Samsung
Galaxy Watch8 - Wi-Fi · 40mm
Which one fits you
On wrists narrower than about 48mm, the Samsung Galaxy Watch8 - Wi-Fi · 40mm is the safer pick — it stays proportionate down to roughly 45mm, where the Amazfit Pop 3R starts to hang over the edge. Above 48mm both sit cleanly, and the Amazfit Pop 3R gives you more presence.
The Amazfit Pop 3R wears larger than the Samsung Galaxy Watch8 - Wi-Fi · 40mm (45.5mm vs 40.4mm case), giving it more wrist presence — and needing a wider wrist to sit cleanly.
The Samsung Galaxy Watch8 - Wi-Fi · 40mm is the slimmer of the two (8.6mm vs 10.8mm), so it slides under a cuff more easily.
On the wrist the Samsung Galaxy Watch8 - Wi-Fi · 40mm feels lighter (30g vs 55.48g, case only).
Among the 461 46mm watches we hold thickness for, the Amazfit Pop 3R is thinner than 97%, so it wears flatter than its width suggests.
Among the 509 40mm watches we hold thickness for, the Samsung Galaxy Watch8 - Wi-Fi · 40mm is thinner than 83%, so it wears flatter than its width suggests.
Specification Comparison
| Spec | AmazfitPop 3R | SamsungGalaxy Watch8 - Wi-Fi · 40mm |
|---|---|---|
| Case Width | 45.5mm | 40.4mm |
| Lug-to-Lug | 45.5mm | 42.7mm |
| Thickness | 10.8mm | 8.6mm |
| Weight | 55.48g | 30g |
| Shape | Circular | Circular |
| Water Resistance | Water resistant | 5 ATM |
| GPS | No | Yes |
| Display type | OLED/AMOLED | OLED/AMOLED |
| Screen size | 1.43 inches | 1.34 inches |
| Always-On Display | Yes | Yes |
| Battery life | 12 days | 2 days |
| 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 | 2023 | 2025 |
Hover a row to highlight that measurement in the schematics below.
2D Dimension Schematics
Every case drawn to scale on a shared centre — from above, and in profile against the wrist. Built from the measurements, so it works for every watch whether or not it has a photo.
- Amazfit Pop 3R45.5mm · 10.8mm thick
- Samsung Galaxy Watch8 - Wi-Fi · 40mm40.4mm × 42.7mm · 8.6mm thick
Amazfit Pop 3R vs Samsung Galaxy Watch8 - Wi-Fi · 40mm on a wrist
Put Amazfit Pop 3R and Samsung Galaxy Watch8 - Wi-Fi · 40mm on the same arm, sized to your own wrist, and turn it. Side by side or stacked on one spot, whichever answers the question faster.
- Amazfit Pop 3R — 45.5mm case, standing 10.8mm off the wrist.
- Samsung Galaxy Watch8 - Wi-Fi · 40mm — 40.4mm case, 42.7mm lug-to-lug, standing 8.6mm off the wrist.
Whether that clears your wrist edges is the question worth answering, and it depends on your wrist rather than on the case diameter.
See them on a wrist in 3DCase shapes are generated from each watch's published measurements — case width, lug-to-lug and thickness — not from manufacturer 3D models, so the proportions are accurate while the dial is generic.
Battery life compared
Furthest apart in Smartwatch mode, where the Amazfit Pop 3R lasts 6.0× as long as the Samsung Galaxy Watch8 - Wi-Fi · 40mm (12 days against 2 days).
Amazfit Pop 3RSamsung Galaxy Watch8 - Wi-Fi · 40mm
Smartwatch
12 days2 days
Full Specification Comparison
113 specs| Spec | Amazfit Pop 3R | Samsung Galaxy Watch8 - Wi-Fi · 40mm |
|---|---|---|
| Design | ||
| width | 45.5 | 40.4 |
| height | 45.5 | 42.7 |
| volume | 22.36 cm³ | 14.84 cm³ |
| weight | 55.48 g | 30 g |
| thickness | 10.8 | 8.6 |
| resolution | 466 x 466 px | 438 x 438 px |
| screen size | 1.43 inches | 1.34 inches |
| Display type | OLED/AMOLED | OLED/AMOLED |
| Has a display | Yes | Yes |
| pixel density | 460 ppi | 327 ppi |
| water resistance | Water resistant | Water resistant |
| Always-On Display | Yes | Yes |
| has a touch screen | Yes | Yes |
| is designed for kids | No | No |
| Watch band is replaceable | Yes | Yes |
| Has sapphire glass display | No | Yes |
| Ingress Protection (IP) rating | IP68 | IP68 |
| has branded damage-resistant glass | No | No |
| ATM rating | — | 5 ATM |
| width of band | — | 20 mm |
| waterproof depth rating | — | 50 m |
| maximum operating temperature | — | 35 °C |
| lowest potential operating temperature | — | 0 °C |
| Battery | ||
| charge time | 1.5 hours | — |
| battery life | 12 days | 2 days |
| has a removable battery | No | No |
| Has a solar power battery | No | No |
| has a rechargeable battery | Yes | Yes |
| battery power | — | 325 mAh |
| has wireless charging | — | Yes |
| Sensors | ||
| has GPS | No | Yes |
| has a compass | No | Yes |
| Has a barometer | No | Yes |
| has a gyroscope | No | 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 | No | Yes |
| Monitors blood oxygenation levels | Yes | Yes |
| Features | ||
| release date | 2023-06-29 | 2025-07-09 |
| Has a stopwatch | Yes | Yes |
| Has smart alarm | No | No |
| warranty period | 1 years | — |
| Has call control | Yes | Yes |
| Has silent alarm | Yes | Yes |
| Has notifications | Yes | Yes |
| Has ECG technology | No | Yes |
| Locates your phone | Yes | Yes |
| has fall detection | No | Yes |
| has voice commands | Yes | Yes |
| Acquires GPS faster | No | Yes |
| Has vibrating alerts | Yes | Yes |
| Can be used to answer calls | Yes | Yes |
| has irregular heart rate warnings | No | Yes |
| Has a built-in camera remote control function | No | Yes |
| RAM | — | 2GB |
| has HRV tracking | — | Yes |
| internal storage | — | 32GB |
| measures VO2 max | — | 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 | No |
| supports Wi-Fi | No | Yes |
| supports Galileo | No | Yes |
| Bluetooth version | 5.2 | 5.3 |
| has a cellular module | No | No |
| Is compatible with iOS | Yes | No |
| Is compatible with Android | Yes | Yes |
| Wi-Fi version | — | Wi-Fi 4 (802.11n) |
| Miscellaneous | ||
| Has passcode | Yes | Yes |
| Is compatible with Windows | No | No |
| Is compatible with Mac OS X | No | No |
| 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 |
| Has auto pause | — | Yes |
| Compatible with smart scales | — | 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 | No | Yes |
| Provides activity reports | Yes | Yes |
| Counts how many calories you've burned | Yes | Yes |
| Has coaching | — | Yes |
| Includes maps | — | Yes |
| Activity tracking | ||
| Measures pace | Yes | Yes |
| Tracks distance | Yes | Yes |
| Tracks elevation | Yes | Yes |
| Designed for golf | No | No |
| 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 | No | No |
| 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 Pop 3R
Sits best on wrists ~48–65mm wide (≈ 12.8–17.4cm circumference).
Samsung Galaxy Watch8 - Wi-Fi · 40mm
Sits best on wrists ~45–61mm wide (≈ 12.0–16.3cm circumference).
Frequently Asked Questions
Is the Amazfit Pop 3R bigger than the Samsung Galaxy Watch8 - Wi-Fi · 40mm?
The Amazfit Pop 3R is bigger — 45.5mm vs 40.4mm case width.
Which fits a smaller wrist better, the Amazfit Pop 3R or the Samsung Galaxy Watch8 - Wi-Fi · 40mm?
The Amazfit Pop 3R suits wrists around 48–65mm wide, and the Samsung Galaxy Watch8 - Wi-Fi · 40mm around 45–61mm. The one with the smaller lower bound is the safer pick for a small wrist.
Can I see the Amazfit Pop 3R and Samsung Galaxy Watch8 - Wi-Fi · 40mm 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.