Amazfit Nexo — case dimensions and design

Amazfit · 2019

Nexo Size, Dimensions & Wrist Fit

Case Width

35.4mm

Thickness

13.7mm

Battery

28 days

Weight

49g

The Nexo looks in proportion on wrists of 13–18 cm (5.1–7.1 in) round, and fills the wrist at 13–15 cm (lug-to-lug estimated at ≈40.5mm; Amazfit does not publish it).

Check Wrist Fit CompareCheck offer

As an Amazon Associate, WatchFitTool earns from qualifying purchases.

Does the Nexo fit your wrist?

Wrist round (mm left each side)	35.4mm≈40.5mm lug to lug, est.
14 cm / 5.5 in	Sweet spot (2.3mm)
15 cm / 5.9 in	Balanced (3.9mm)
16 cm / 6.3 in	Balanced (5.6mm)
17 cm / 6.7 in	Balanced (7.2mm)
18 cm / 7.1 in	Understated (8.8mm)
19 cm / 7.5 in	Understated (10.4mm)
20 cm / 7.9 in	Understated (12mm)

How the fit model works · Size chart for every wrist

The Nexo in short

At 13.7mm, the thickest of the 11 Amazfit watches 34–36mm across.
49g on the wrist. Heavier than 88% of the 33 smartwatches 35mm across that we have weights for.

Compare with another watch

Size, fit and battery side by side, against any smartwatch we list.

↑ ↓ to move · Enter to open the comparison · Esc to close

Nexo battery life

Published runtime

Battery life28 days

Charges in 1.5 hours

Where it ranks among Amazfit watches

Everyday use28 days#4 of 54
Capacity420 mAh#12 of 52

See all 54 Amazfit watches ranked by battery life

Settings, the 24-hour idle test and known firmware drains →

2D Dimension Schematics

Top view

Side view

Amazfit Nexo 35.4mm × ≈40.5mm (est.) · 13.7mm thick

3D preview

Amazfit Nexo on a wrist

What size band does the Nexo take?

Lug width

22mm

Alternatives to the Nexo

Nexo — Frequently Asked Questions

Is the Amazfit Nexo thick for a 35mm watch?

At 13.7mm, thicker than 88% of the 33 smartwatches 35mm across that we track — it will sit noticeably high on the wrist.

Nexo specifications

Battery life: 28 days
Display: 1.39 inches
Resolution: 454 x 454 px
Water rating: Waterproof
Strap: 22 mm
Storage: 1GB
Charging: 1.5 hours

Show all specificationsAmazfit's published specification, for reference · checked September 2026

Design

width: 35.4
height: 35.4
volume: 17.17 cm³
weight: 49 g
thickness: 13.7
resolution: 454 x 454 px
screen size: 1.39 inches
Display type: OLED/AMOLED
Has a display: Yes
pixel density: 326 ppi
width of band: 22 mm
water resistance: Waterproof
Always-On Display: Yes
has a touch screen: Yes
waterproof depth rating: 50 m
Watch band is replaceable: Yes
Has sapphire glass display: No
Ingress Protection (IP) rating: IP68
has branded damage-resistant glass: Yes

Battery

charge time: 1.5 hours
battery life: 28 days
battery power: 420 mAh
has wireless charging: No
has a removable battery: No
Has a solar power battery: No
has a rechargeable battery: Yes

Sensors

has GPS: Yes
has a compass: Yes
Has a barometer: Yes
has a gyroscope: Yes
has an accelerometer: Yes
Monitors perspiration: No
Has a heart rate monitor: Yes
Has a temperature sensor: Yes
Monitors blood oxygenation levels: No

Features

RAM: 0.51GB
release date: 2019-10-02
Has a stopwatch: Yes
Has smart alarm: No
Has call control: Yes
Has silent alarm: Yes
internal storage: 1GB
Has notifications: Yes
Has ECG technology: No
Locates your phone: No
has fall detection: No
has voice commands: Yes
Acquires GPS faster: Yes
Has vibrating alerts: Yes
number of microphones: 1
Can be used to answer calls: No
has irregular heart rate warnings: No
Has a built-in camera remote control function: Yes

Connectivity

has NFC: No
supports Wi-Fi: Yes
supports Galileo: Yes
Bluetooth version: 4.2
has a cellular module: No
Is compatible with iOS: Yes
Is compatible with Android: Yes

Miscellaneous

Has passcode: Yes
maximum Bluetooth range: 10 m
Is compatible with Windows: No
Is compatible with Mac OS X: No
has an ambient light sensor: Yes
has an external memory slot: No
has a battery level indicator: Yes
has a socket for a 3.5 mm audio jack: No
Compatible with external heart rate monitors: Yes

App & Software

Ad-free: Yes
Free app: Yes
Tracks BMI: Yes
Supports routes: Yes
Has achievements: Yes
Has goal setting: Yes
Has exercise diary: Yes
Can be personalised: Yes
Has weight tracking: Yes
Predicts start date: Yes
Tracks water intake: Yes
Has inactivity alerts: Yes
Has period notifications: Yes
Has temperature tracking: Yes
Provides activity reports: Yes
Counts how many calories you've burned: Yes

Activity tracking

Measures pace: Yes
Tracks distance: Yes
Tracks elevation: Yes
Designed for golf: No
Tracks your sleep: Yes
Tracks steps taken: Yes
Designed for diving: Yes
Has a route tracker: Yes
Has exercise tagging: Yes
Has multi-sport mode: Yes
Tracks calorie intake: Yes
Provides sleep reports: Yes
Detects activities automatically: Yes
Has a stroke counter for swimming: Yes

← All Amazfit watches Amazfit watches under 40mm →Amazfit battery life compared →Browse all brands How watch sizing works →Compare watch sizes →