Fitbit Sense 2 vs OnePlus Watch 3
Fitbit Sense 2 (2022, listed at $249) and OnePlus Watch 3 (2025, listed at $329) are both smartwatches, so the choice comes down to specifics.
Specs last updated · prices are list prices
Fitbit Sense 2
Continuous EDA stress sensor + ECG and skin-temperature tracking — Fitbit's most health-focused watch.
OnePlus Watch 3
Wear OS 5 with Snapdragon W5 + BES2800 dual chips — 5-day smart battery and 16-day power-saver.
The verdict
On the numbers we track, Fitbit Sense 2 wins on battery life (6 days vs 5 days), weight (38 g vs 49 g) and price ($249 vs $329).
Check your phone first. The Fitbit Sense 2 works with both iPhone and Android; the OnePlus Watch 3 works with Android only. A watch that does not pair with your phone is not an option however good its specs are.
Bottom line: on raw specs the Fitbit Sense 2 leads 3 to 0, but five spec categories are only a starting point. Match it to your phone, your main sport and your budget before you decide, or run the free quiz to see how each ranks for your answers.
Spec by spec
| Spec | Fitbit Sense 2 | OnePlus Watch 3 |
|---|---|---|
| Battery (rated) | 6 days | 5 days |
| Weight | 38 g | 49 g |
| List price | $249 | $329 |
| Water rating | 5ATM | 5ATM |
| Tracked features | 6 | 6 |
| Case size | 41 mm | 47 mm |
| Display | AMOLED | AMOLED |
| Works with | both iPhone and Android | Android only |
| Listed best for | health tracking, everyday wellness and gym and strength work | everyday wellness, health tracking and running |
| Released | 2022 | 2025 |
Trophy marks the better value on the five measurable specs. Battery is the manufacturer's rating, not our test. How we score is on the methodology page.
Feature overlap
Both have (5)
- built-in GPS
- ECG
- blood-oxygen (SpO₂)
- AMOLED display
- swim tracking
Only Fitbit Sense 2 (1)
- contactless payments
Only OnePlus Watch 3 (1)
- on-device music
Which one should you pick?
Pick the Fitbit Sense 2 if…
- You want to spend less: it lists for $80 less.
- You want fewer charges: about 6 days per charge vs 5 days.
- You want a lighter watch: 38 g vs 49 g.
- You need contactless payments, which the OnePlus Watch 3 does not list.
- Your main use is gym and strength work: it is listed for that and the OnePlus Watch 3 is not.
Pick the OnePlus Watch 3 if…
- You need on-device music, which the Fitbit Sense 2 does not list.
- Your main use is running: it is listed for that and the Fitbit Sense 2 is not.
- You want the newer model (2025 vs 2022).
Skip it if…
- • You use an iPhone — it needs an Android phone for full features.
- • You have a small wrist (under about 160 mm) — the 47 mm case we list is large (check whether a smaller size is sold).
Frequently asked questions
Which has better battery life, the Fitbit Sense 2 or the OnePlus Watch 3?
The Fitbit Sense 2 has the longer rated battery life: about 6 days per charge against 5 days. These are manufacturer ratings; heavy GPS, always-on display and cellular use will cut both.
Which is cheaper, the Fitbit Sense 2 or the OnePlus Watch 3?
The Fitbit Sense 2 has the lower list price: $249 against $329 in our database. List prices change often, so check Amazon for today's price.
Do the Fitbit Sense 2 and OnePlus Watch 3 work with iPhone and Android?
Check your phone first. The Fitbit Sense 2 works with both iPhone and Android; the OnePlus Watch 3 works with Android only. A watch that does not pair with your phone is not an option however good its specs are.
Which is better for swimming, the Fitbit Sense 2 or the OnePlus Watch 3?
Neither has an edge on water rating: both are rated 5ATM. 5ATM is suitable for showering and pool swimming, but not for high-speed water sports or diving.
Not sure either is right for you?
Nine questions about your phone, sport, wrist and budget, scored against all of our watches with the reasoning shown.
Take the free quizWhere each one ranks #1 in our quiz
Fitbit Sense 2
It is not the top pick for any standard quiz profile.