Amazfit Active 2 vs Google Pixel Watch 3 45mm
Size, specs & wrist fit compared
As an Amazon Associate, WatchFitTool earns from qualifying purchases.
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 Google Pixel Watch 3 45mm wears larger than the Amazfit Active 2 (45mm vs 43.9mm case), giving it more wrist presence — and needing a wider wrist to sit cleanly.
The Amazfit Active 2 is the slimmer of the two (9.9mm vs 12.3mm), so it slides under a cuff more easily.
On the wrist the Amazfit Active 2 feels lighter (29.5g vs 37g, case only).
The Amazfit Active 2 is thinner than 99% of the 44mm watches we track and the Google Pixel Watch 3 45mm than 71% of the 45mm ones — so both wear flatter than their widths suggest.
The Google Pixel Watch 3 45mm is 1.1mm wider, 1.1mm longer, 2.4mm thicker and 7.5g heavier than the Amazfit Active 2. Both are circular.
Amazfit
Active 2
Pixel Watch 3 45mm
Switch or add watches
Amazfit
Active 2
Pixel Watch 3 45mm
Watch Fit Tool
For sports watches, lug-to-lug (L2L) is what matters most — it decides whether a watch overhangs your wrist. Bulky is fine; overhang is not.
Measure at the point where you wear your watch — typically just below the wrist bone.
Flat width — lay your arm on a table, palm facing up, and measure straight across the top of your wrist with a ruler. Bone to bone; do not follow the curve down the sides.
Around — wrap a tape measure snugly round the wrist. No tape? Wrap a strip of paper, mark the overlap and hold the strip against a ruler.
Width ≠ circumference. They are different numbers — around 170mm is about 64mm across — so set the toggle to whichever one you actually measured before you type it in.
Amazfit Active 2
Case 43.9mm · Lug-to-lug 43.9mm · Thickness 9.9mm · 30g
Balanced Fit
43.9mm on a 55mm wrist
Comfortably inside the edges of your wrist, and it seats and sits low enough to wear without thinking about it.
On a 55mm wrist the sweet spot is 47–53mm lug to lug. This one is 43.9mm, so you could go bigger.
Measure where you wear it, just below the wrist bone. Either of these works — the tool converts between them.
- 1. Flat width — arm flat on a table, palm up. Measure straight across the top of the wrist, bone to bone, ignoring the curve down the sides.
- 2. Around — a tape, or a strip of paper marked and held against a ruler, snug the whole way round.
Leather: Attaches at the lugs, so the case back rests on your skin. Thins and softens with wear. Typical figures, not this model’s own.
Show the measurementsHide the measurements
- Across the wrist5.6mm spare each side
Comfortable, with visible skin either side.
- Off the wrist9.9mm off the skin
Normal sports-watch height for a wrist this size. (9.9mm case, back against the skin)
- How it seats~4.7mm under the rim
Seats well, with the case back following most of the wrist.
- Weight on the wrist30g
Light enough to forget you have it on. (0.5g per mm of wrist)
Google Pixel Watch 3 45mm
Case 45.0mm · Lug-to-lug 45.0mm · Thickness 12.3mm · 37g
Balanced Fit
45mm on a 55mm wrist
Comfortably inside the edges of your wrist, and it seats and sits low enough to wear without thinking about it.
On a 55mm wrist the sweet spot is 47–53mm lug to lug. This one is 45mm, so you could go bigger.
Measure where you wear it, just below the wrist bone. Either of these works — the tool converts between them.
- 1. Flat width — arm flat on a table, palm up. Measure straight across the top of the wrist, bone to bone, ignoring the curve down the sides.
- 2. Around — a tape, or a strip of paper marked and held against a ruler, snug the whole way round.
Leather: Attaches at the lugs, so the case back rests on your skin. Thins and softens with wear. Typical figures, not this model’s own.
Show the measurementsHide the measurements
- Across the wrist5.0mm spare each side
Comfortable, with visible skin either side.
- Off the wrist12.3mm off the skin
Normal sports-watch height for a wrist this size. (12.3mm case, back against the skin)
- How it seats~5.2mm under the rim
Seats well, with the case back following most of the wrist.
- Weight on the wrist37g
Light enough to forget you have it on. (0.7g per mm of wrist)
2D Dimension Schematics
Every case drawn to scale on a shared centre — from above, and in profile against the wrist.
- Amazfit Active 243.9mm · 9.9mm thick
- Google Pixel Watch 3 45mm45mm · 12.3mm thick
3D preview
Amazfit Active 2 vs Google Pixel Watch 3 45mm on a wrist
Sized to your own wrist, turned any way you like.
Shapes are built from published measurements, not manufacturer 3D models — accurate proportions, generic dial.
Battery life compared
Furthest apart in Battery Saver mode, where the Amazfit Active 2 lasts 12.7× as long as the Google Pixel Watch 3 45mm (19 days against 36 hours).
Amazfit Active 2Google Pixel Watch 3 45mm
Battery Saver
456 hours36 hoursSmartwatch
10 days1 dayGPS
21 hours—
Specifications
The short version
10 key specs| Spec | AmazfitActive 2 | GooglePixel Watch 3 45mm |
|---|---|---|
| Case Width | 43.9mm | 45mm |
| Thickness | 9.9mm | 12.3mm |
| Weight | 29.5g | 37g |
| Shape | Circular | Circular |
| Water Resistance | 5 ATM | 5 ATM |
| GPS | Yes | Yes |
| Display type | OLED/AMOLED | OLED/AMOLED |
| Screen size | 1.32 inches | 1.4 inches |
| Battery life | 10 days | 1 day |
| Released | 2025 | 2023 |
Every specification
123 specs| Spec | Amazfit Active 2 | Google Pixel Watch 3 45mm |
|---|---|---|
| Design | ||
| width | 43.9 | 45 |
| height | 43.9 | 45 |
| volume | 19.08 cm³ | 24.91 cm³ |
| weight | 29.5 g | 37 g |
| thickness | 9.9 | 12.3 |
| ATM rating | 5 ATM | 5 ATM |
| resolution | 466 x 466 px | 456 x 456 px |
| screen size | 1.32 inches | 1.4 inches |
| Display type | OLED/AMOLED | OLED/AMOLED |
| Has a display | Yes | Yes |
| pixel density | 353 ppi | 320 ppi |
| width of band | 20 mm | — |
| water resistance | Water resistant | Waterproof |
| Always-On Display | Yes | Yes |
| has a touch screen | Yes | Yes |
| is designed for kids | No | — |
| Watch band is replaceable | Yes | Yes |
| Has sapphire glass display | Yes | No |
| has branded damage-resistant glass | No | Yes |
| Gorilla Glass version | — | Gorilla Glass 5 |
| waterproof depth rating | — | 50 m |
| Ingress Protection (IP) rating | — | IP68 |
| Battery | ||
| charge time | 2 hours | 1.25 hours |
| battery life | 10 days | 1 days |
| battery power | 270 mAh | 420 mAh |
| has wireless charging | No | No |
| has a removable battery | No | No |
| battery life with GPS on | 21 hours | — |
| Has a solar power battery | No | No |
| has a rechargeable battery | Yes | Yes |
| battery life in power save mode | 456 hours | 36 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 | Yes | Yes |
| has an accelerometer | Yes | Yes |
| Monitors perspiration | No | No |
| Has a heart rate monitor | Yes | Yes |
| Has a temperature sensor | Yes | Yes |
| Monitors blood oxygenation levels | Yes | Yes |
| Features | ||
| release date | 2025-01-06 | 2023-10-04 |
| Has a stopwatch | Yes | Yes |
| Has call control | Yes | Yes |
| Has silent alarm | Yes | Yes |
| has HRV tracking | Yes | Yes |
| measures VO2 max | Yes | Yes |
| Has notifications | Yes | Yes |
| Has ECG technology | No | Yes |
| Locates your phone | Yes | Yes |
| has a front camera | No | — |
| has fall detection | No | Yes |
| has voice commands | Yes | Yes |
| Acquires GPS faster | Yes | No |
| Has vibrating alerts | Yes | Yes |
| number of microphones | 1 | — |
| shows readiness level | Yes | Yes |
| Can be used to answer calls | Yes | Yes |
| measures resting heart rate | Yes | Yes |
| has irregular heart rate warnings | Yes | Yes |
| has fast/slow heart rate notifications | Yes | Yes |
| Has a built-in camera remote control function | Yes | Yes |
| RAM | — | 2GB |
| CPU speed | — | 2 x 1.5 GHz |
| Has smart alarm | — | No |
| warranty period | — | 1 years |
| internal storage | — | 32GB |
| Connectivity | ||
| has NFC | Yes | Yes |
| supports ANT+ | No | — |
| supports Wi-Fi | Yes | Yes |
| supports Galileo | Yes | Yes |
| Bluetooth version | 5.2 | 5 |
| has a cellular module | No | Yes |
| Is compatible with iOS | Yes | No |
| Is compatible with Android | Yes | Yes |
| SIM cards | — | 1 eSIM |
| Wi-Fi version | — | Wi-Fi 4 (802.11n) |
| Miscellaneous | ||
| Has passcode | Yes | Yes |
| Has auto pause | 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 | — |
| 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 | — |
| App & Software | ||
| Ad-free | Yes | Yes |
| Free app | Yes | Yes |
| Tracks BMI | 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 |
| number of exercises | 160 | — |
| Has inactivity alerts | Yes | Yes |
| Has period notifications | Yes | Yes |
| Has temperature tracking | Yes | 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 | Yes | 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 | 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 Active 2
Sits best on wrists ~46–63mm wide (≈ 12.3–16.8cm circumference).
Google Pixel Watch 3 45mm
Sits best on wrists ~47–64mm wide (≈ 12.6–17.1cm circumference).
Frequently Asked Questions
Is the Amazfit Active 2 bigger than the Google Pixel Watch 3 45mm?
The Google Pixel Watch 3 45mm is bigger — 45mm vs 43.9mm case width.
Which fits a smaller wrist better, the Amazfit Active 2 or the Google Pixel Watch 3 45mm?
The Amazfit Active 2 suits wrists around 46–63mm wide, and the Google Pixel Watch 3 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 2 and Google Pixel Watch 3 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.