Fitbit Inspire 3 vs Garmin Forerunner 965
The Verdict
Fitbit Inspire 3 delivers essential health tracking in an ultraportable 20g package ideal for casual fitness enthusiasts, while Garmin Forerunner 965 targets serious athletes with comprehensive GPS navigation, multi-GNSS support, and advanced training metrics. Display quality vastly differs,the Inspire 3's 0.73-inch AMOLED screen lacks always-on capability and offers modest resolution, whereas the Forerunner 965 boasts a vibrant 1.4-inch always-on AMOLED display with 454x454 resolution. Battery performance heavily favors Garmin's offering with 23 days in smartwatch mode versus Inspire 3's 10 days. Both track SpO2, skin temperature, and sleep, but Forerunner 965 includes built-in GPS, NFC payments, and WiFi connectivity absent from the budget option. At $99, Inspire 3 excels for basic daily activity monitoring and sleep insights. Forerunner 965's $599 premium justifies itself through superior durability (10 ATM vs 5 ATM), training features, and navigation capabilities. Choose Inspire 3 for simplicity; select Forerunner 965 for serious athletic performance tracking.
Who Should Buy
Buy the Fitbit Inspire 3 if…
- →10-day battery life — charge once and forget for well over a week
- →Color AMOLED display is a huge upgrade over Inspire 2's grayscale
- →Ultra-lightweight at 20 g — perfect for sleep tracking
Buy the Garmin Forerunner 965 if…
- →23-day battery life in smartwatch mode for serious endurance athletes
- →First Forerunner with AMOLED display — bright and easy to read
- →Multi-band GPS with SatIQ for highly accurate outdoor tracking
Category Scores
Pros & Cons
Fitbit Inspire 3
Pros
- 10-day battery life — charge once and forget for well over a week
- Color AMOLED display is a huge upgrade over Inspire 2's grayscale
- Ultra-lightweight at 20 g — perfect for sleep tracking
- SpO2 and skin temperature sensors at just $99
- 5ATM water resistance for swimming
Cons
- No built-in GPS — relies on phone GPS for outdoor tracking
- No NFC — cannot use Fitbit Pay
- Tiny screen limits notification readability
- Best health insights locked behind Fitbit Premium subscription
- No always-on display option
Garmin Forerunner 965
Pros
- 23-day battery life in smartwatch mode for serious endurance athletes
- First Forerunner with AMOLED display — bright and easy to read
- Multi-band GPS with SatIQ for highly accurate outdoor tracking
- Advanced running metrics: running power, VO2 max, race predictor
- Garmin Pay NFC and music storage for offline playback
Cons
- No ECG sensor
- No cellular connectivity
- Garmin OS app ecosystem is very limited compared to Wear OS or watchOS
- Expensive at $599 for a running-focused device
Full Specifications
| Spec | Fitbit Inspire 3 | Garmin Forerunner 965 |
|---|---|---|
| Software | Fitbit OS | Garmin OS |
| Body | ||
| Weight | 20 g | 53 g |
| Case material | Plastic resin | Fiber-reinforced polymer with titanium bezel |
| Water resistance | 5ATM | 10 ATM |
| Health & Sensors | ||
| ECG | ||
| SpO₂ | ||
| Skin temperature | ||
| Heart rate | ||
| Sleep tracking | ||
| Battery | ||
| Battery life | Up to 10 days | Up to 23 days smartwatch mode, 31 hrs GPS |
| Display | ||
| Size | 0.73 inches | 1.4 inch |
| Type | AMOLED | AMOLED |
| Always-on display | ||
| Resolution | 256 x 124 | 454 x 454 |
| Processor | ||
| Chipset | Fitbit custom processor | Garmin proprietary |
| Connectivity | ||
| GPS | ||
| NFC | ||
| Wi-Fi | ||
| Cellular | ||
| Bluetooth | 5.0 | 5.0 |
Related Comparisons
This comparison is based on verified manufacturer specifications covering display, performance, camera, battery, and build quality. Scores are generated by analyzing specs across weighted categories on a 10-point scale. Learn more about our methodology.
Explore more in smartwatches, see all Fitbit products or all Garmin products. View full details for the Fitbit Inspire 3 or the Garmin Forerunner 965.