Wear Radar

OnePlus WatchvsFitbit Charge

7d vs 5d
battery life
Fitbit Charge lasts longer
$209
price gap
Fitbit Charge cheaper
35g
lighter
Fitbit Charge
OnePlus Watch
Buy/Wait:neutral

First-generation product — no release history to base predictions on

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Fitbit Charge
Buy/Wait:bad

Late in cycle — a new model is likely coming

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OnePlus WatchFitbit Charge
Pricing
Starting price$329$120
Subscription✓ Noneℹ️ Optional — $79/yr
Hardware
Weight50g15g
Water resistance5ATM50m
Battery5 days7 days
Always-on display
GPS
Cellular
PlatformAndroid onlyiOS & Android
TierSmartwatchFitness Tracker
Buy timing
ReleasedApr 10, 2025Sep 28, 2023
Cycle adviceneutralbad
Deals adviceneutralgreat
Next modelFitbit Charge 7 (Expected 2026)

Health Sensors

OnePlus Watch only
2 exclusive sensors
Stress TrackingStress estimate from HRV and physiological signals
Fall DetectionAuto-calls emergency services after a hard fall
Both
5 shared
Heart RateContinuous or on-demand pulse tracking
ECGDetects irregular heart rhythms (AFib)
SpO2Blood oxygen saturation, tracked during sleep
Skin TempOvernight changes linked to illness or cycle tracking
HRVHeart rate variability — stress & recovery scores
Fitbit Charge only
1 exclusive sensor
EDA / StressSkin conductance sensor measuring stress responses

Why buy each?

OnePlus Watch

5-day Wear OS battery — finally

The dual-engine Snapdragon W5 + BES2800 co-processor architecture delivers up to 5 days in Smart Mode — 2–3× longer than most Wear OS rivals. A 10-minute charge provides a full day of use.

Dual-frequency GPS on a $329 watch

L1 + L5 dual-band GPS gives running and cycling route accuracy typically found only on $500+ sports watches — accurate to within metres even in urban canyons.

Full Wear OS 5 with Google ecosystem

Google Maps turn-by-turn navigation, Google Wallet contactless payment, and Play Store app access — plus Google Health Connect integration for the full Android wearables ecosystem.

Fitbit Charge

ECG and EDA stress in a slim band

Full ECG, electrodermal activity stress sensing, SpO2, and continuous heart rate in a tracker thinner than most smartwatches.

Google apps integration

Google Maps navigation, Google Wallet NFC payments, and YouTube Music controls — more useful on-device apps than any previous Charge.

7-day battery with GPS

7 days of typical use, dropping to around 30 minutes per GPS workout session before needing a charge.

Quick Winner

The right pick depends on what you optimize for.

For the budget
OnePlus Watch wins

$329 vs $357 over 3 years · no required subscription.

For battery life
Fitbit Charge wins

7 days vs 5 days battery.

For health depth
OnePlus Watch wins

7 sensors.

For daily comfort
Fitbit Charge wins

15g · no required subscription.

Bottom Line

Technical gaps
  1. Watch-only sensors: Stress Tracking, Fall Detection.
  2. Charge-only sensors: EDA / Stress.
  3. Weight. Charge is 35g lighter — relevant for all-day comfort and sleep.
Commercial gaps
  1. Hardware cost. Charge is $209 cheaper upfront ($120 vs $329).
Pick the OnePlus Watch if…

Android users who want full Wear OS 5 — Google Maps, Google Wallet, Play Store — with longer-than-average battery life without paying premium Galaxy Watch or Pixel Watch prices. Not for iPhone users: OnePlus Watch 3 does not support iOS.

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Pick the Fitbit Charge if…

Anyone who wants serious health and fitness tracking without the bulk or cost of a full smartwatch. Works with both Android and iPhone, making it the most accessible Fitbit tracker in the lineup.

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