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Wearable comparison

Amazfit Balance 2 vs OnePlus Watch 4

Compare battery life, health tracking, display and fit.

Compared products
01Selected
Amazfit Balance 2

Amazfit Balance 2

  • Screen: 480 × 480 pixels; 323 ppi.
  • 32 GB storage in this version.
  • Runs Zepp OS 6.
  • 658 mAh battery capacity.
  • Bluetooth 5.2.
KSh 39,000In Stock
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02
OnePlus Watch 4

OnePlus Watch 4

  • Screen: 466 × 466 pixels; 310 ppi.
  • Qualcomm Snapdragon W5; BES2800 MCU processor.
  • 2 GB RAM in this version.
  • 32 GB storage in this version.
  • Runs OxygenOS Watch 8; Wear OS 6.0.
KSh 38,500In Stock
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2 spaces available

Samsung Galaxy Watch 9 40mmKSh 39,500
Samsung Galaxy Watch 8 ClassicKSh 38,500
Google Pixel Watch 5 41mmKSh 42,000
WHOOP ONE 5.0 SensorKSh 37,000
Amazfit T-Rex 3KSh 33,000
AmazFit T-Rex UltraKSh 47,000
Google Pixel Watch 3KSh 37,500
2 of 4 products

Our quick verdict

The Amazfit Balance 2 lasts much longer between charges (21 days vs 5 days), works with Android phones and iPhones and is lighter to wear all day, while the OnePlus Watch 4 has a brighter screen for outdoor use and a premium titanium build and is slimmer.

Display

Amazfit Balance 2
480 × 480 pixels; 323 ppi
OnePlus Watch 4
466 × 466 pixels; 310 ppi

Software

Amazfit Balance 2
Runs Zepp OS 6
OnePlus Watch 4
Runs OxygenOS Watch 8; Wear OS 6.0

Battery life

Amazfit Balance 2
658 mAh battery
OnePlus Watch 4
646 mAh battery

Portability

Amazfit Balance 2
43 g
OnePlus Watch 4
68 g

Water resistance

Amazfit Balance 2
10 ATM
OnePlus Watch 4
IP69 water and dust resistance

Key differences

The main differences to help you choose.

Amazfit Balance 2

  • Longer battery life: up to 21 days (vs 5 days).
  • Works with Android phones and iPhones.
  • Lighter: 43 g (vs 68 g).
  • Swimproof: water resistant to 100 m (vs 50 m).
  • Syncs with third-party apps such as Strava and Apple Health.
  • Water resistant to 10 ATM (vs 5 ATM).

OnePlus Watch 4

  • Brighter display: up to 3,000 nits (vs 2,000).
  • Titanium case (vs plastic case).
  • Slimmer: 11 mm thick (vs 12.3 mm).
  • Dual-band Wi-Fi (vs 2.4 GHz only).

What matters most to you?

Choose any priorities

How each product answers the questions buyers ask most. Tick a topic to add it, untick one to hide it.

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6 priorities selected.
How each product answers the selected priorities
PriorityAmazfit Balance 2OnePlus Watch 4
Battery life658 mAh battery646 mAh battery
Storage32 GB storage32 GB storage
Display1.5-inch OLED display, 323 ppi1.5-inch OLED display, 310 ppi
SoftwareZepp OS 6OxygenOS Watch 8
ConnectionsBluetooth 5.2Bluetooth 5.2
Water resistance10 ATMIP69 water and dust resistance

Detailed comparison

Explore the full specifications, section by section.

Display

Display specifications comparison
SpecificationAmazfit Balance 2OnePlus Watch 4
Display1.5-inch AMOLED1.5-inch LTPO OLED
Screen resolution480 × 480 pixels; 323 ppi466 × 466 pixels; 310 ppi
Display protectionSapphire glassSapphire crystal
Display features—600 nits (typ), 1600 nits (HBM), 3000 nits (peak)

Connectivity

Connectivity specifications comparison
SpecificationAmazfit Balance 2OnePlus Watch 4
Wi-FiWi-Fi 2.4 GHzWi-Fi 2.4 GHz + 5 GHz
BluetoothBluetooth 5.2 BLEBluetooth 5.2
Positioning / GNSSDual-band GNSS; circularly polarized antenna; 6 satellite systemsDual-frequency L1 + L5; GPS; BeiDou; Galileo; GLONASS; QZSS
Satellite featuresNo—
Network / cellular—No cellular connectivity
SIM / eSIM—Unsupported
NFC—Supported

Identity & design

Identity & design specifications comparison
SpecificationAmazfit Balance 2OnePlus Watch 4
BrandAmazfitOnePlus
ModelAmazfit Balance 2OnePlus Watch 4
AnnouncedJune 24, 20252026, April 22
Dimensions47.4 × 47.4 × 12.3 mm without heart-rate sensor base47.4 × 47.4 × 11.0 mm
Weight43 g without strapApproximately 43 g without strap; 68 g with strap
Build materialsAluminum-alloy frame; fibre-reinforced polymer caseTitanium-alloy case; PA and fibreglass back
Wrist size140–210 mm140–210 mm
Strap / band22 mm silicone; pin buckle; standard and accessory strapsFluororubber
Controls / buttonsTwo physical buttons and touchscreen—

Performance & software

Performance & software specifications comparison
SpecificationAmazfit Balance 2OnePlus Watch 4
Storage32GB32 GB
Operating systemZepp OS 6OxygenOS Watch 8; Wear OS 6.0
Processor—Qualcomm Snapdragon W5; BES2800 MCU
RAM—2 GB

Audio & communication

Audio & communication specifications comparison
SpecificationAmazfit Balance 2OnePlus Watch 4
SpeakerTwo speakersSupported
MicrophoneSupportedSupported
CallingBluetooth callingBluetooth calling with a connected smartphone

Sensors, health & fitness

Sensors, health & fitness specifications comparison
SpecificationAmazfit Balance 2OnePlus Watch 4
SensorsBioTracker 6.0 PPG; 5 PD + 2 LED; accelerometer; gyroscope; barometer; ambient light; geomagnetic sensor; temperatureAccelerometer; gyroscope; optical heart-rate sensor; optical blood-oxygen sensor; geomagnetic sensor; ambient-light sensor; barometer; wrist-temperature sensor
Health & wellness features24-hour heart rate, SpO₂ and stress; one-tap measurement; high and low heart-rate alerts; low SpO₂ alerts; breathing exercises; PAI; heart-rate recovery; menstrual-cycle tracking; HybridChargeHeart rate; high and low heart-rate alerts; SpO₂ spot checks and all-day monitoring; stress; breathing exercises; cycle tracking; 60-second Wellness Overview
Sleep trackingSleep HRV; sleep stages including REM; naps; sleep schedule; breathing quality; sleep scoreDeep, light and REM sleep; awake time; sleep score; breathing rate; SpO₂; snoring-risk assessment
Sports / workout modes180+ sports modes100+ sports modes
Training & outdoor featuresZepp Coach; PeakBeats; HybridCharge; training and interval templates; HYROX templates and Virtual Pace; track running; trajectory correction; virtual pacer; offline maps; golf and ski mapsAerobic training effect; cardiorespiratory capacity; recovery time; heart-rate recovery; running form; track running
Diving / depth featuresScuba-diving support; follow the manufacturer’s dive-mode limits and safety guidance—
Safety & emergency features—Fall detection; emergency rescue

Battery & durability

Battery & durability specifications comparison
SpecificationAmazfit Balance 2OnePlus Watch 4
Battery capacity658 mAh rated646 mAh typical; 632 mAh rated
Battery life21 days typical; 10 days heavy; 33 hours accurate GPS; 67 hours GPS power saverUp to 5 days smart mode; 3 days heavy use; 16 days power saver
ChargingMagnetic charging headCharging base with USB-C cable
Water resistance10 ATM5 ATM; IP69; IP68
Durability / certificationsMIL-STD-810G-2014 low-pressure, temperature, shock, vibration and impact tests; TUV water-resistance report 68.189.25.0132.01MIL-STD-810H

Compatibility

Compatibility specifications comparison
SpecificationAmazfit Balance 2OnePlus Watch 4
Phone compatibilityAndroid 7 or later; iOS 15 or laterAndroid 9.0 or later; GMS 23.45.23 or later
Companion appZeppOHealth
ColorsBlack; Lava accessory strapMidnight Titanium; Evergreen Titanium

Additional specifications

Additional specifications specifications comparison
SpecificationAmazfit Balance 2OnePlus Watch 4
Case materialAluminum alloy; fibre-reinforced polymerTitanium alloy
Pixels per inch323 ppi310 ppi
Peak brightness2,000 nits peak600 nits typical; 1,500 nits high-brightness mode; 3,000 nits peak in supported sports modes
Packing listWatch with standard strap; magnetic charging head; instruction manualWatch; charging base; strap; USB-C cable; user guide; safety and warranty booklet
Smart recognition25 strength-training movements; 8 sports movementsRunning; walking; cycling; swimming; rowing machine; elliptical
Third-party fitness appsRunna; Strava; TrainingPeaks; Intervals.icu; Google Fit; Apple Health—
Charging time—Approximately 75 minutes
Release status—Available. Released 2026, April
Card slot—No
Camera—No
3.5 mm headphone jack—No
USB—No
Radio—No
Maximum charging power—Approximately 7.5 W
Operating temperature—0–35 °C

Similarities

  • Both use Bluetooth 5.2.
  • Both take calls over Bluetooth.
  • Both have OLED displays.
  • Both offer 32 GB of storage.
  • Both have 1.5-inch screens.
  • Both connect over Bluetooth.

In summary

Get the Amazfit Balance 2 if you want much longer battery life and a choice of Android phone or iPhone, or the OnePlus Watch 4 if you would rather have a brighter screen for outdoor use and a premium titanium build.

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In-stock alternatives

Samsung Galaxy Watch 8 ClassicFor Amazfit Balance 2Samsung Galaxy Watch 8 ClassicView product ↗Samsung Galaxy Watch 9 40mmFor Amazfit Balance 2Samsung Galaxy Watch 9 40mmView product ↗Google Pixel Watch 3For OnePlus Watch 4Google Pixel Watch 3View product ↗WHOOP ONE 5.0 SensorFor OnePlus Watch 4WHOOP ONE 5.0 SensorView product ↗

Related comparisons

Samsung Galaxy Watch 9 40mmAmazfit Balance 2Samsung Galaxy Watch 8 ClassicAmazfit Balance 2Amazfit Balance 2Google Pixel Watch 5 41mmWHOOP ONE 5.0 SensorAmazfit Balance 2Amazfit T-Rex 3Amazfit Balance 2AmazFit T-Rex UltraAmazfit Balance 2Google Pixel Watch 3Amazfit Balance 2Amazfit Balance 2Amazfit Balance 3Amazfit Balance 2Xiaomi Watch S1 Pro
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