vs
4.4Display4.4
9.3Battery life9.6
8.3Health tracking4.9
8.2Sports & outdoor8.2
3.2Smart features6.5
6.2Build & durability7.5
Dimensions
Size comparison
Fenix 8 51mm SolarTactix 7
| Fenix 8 51mm Solar | Tactix 7 | Difference | |
|---|---|---|---|
| Height | 51 mm | 51 mm | = |
| Width | 51 mm | 51 mm | = |
| Thickness | 15.4 mm | 14.9 mm | +0.5 mm |
| Weight | 95 g | 89 g | +6 g |
Drawn to the same scale from the official dimensions (front and side).
Why is Fenix 8 51mm Solar better than Tactix 7?
- Battery life (smartwatch mode)30 days vs 28 days+7%
- GPS battery life95 h vs 89 h+7%
Why is Tactix 7 better than Fenix 8 51mm Solar?
- Battery saver mode48 days vs 90 days+88%
- Weight95 g vs 89 g+7%
- Thickness15.4 mm vs 14.9 mm+3%
Specifications
Side by side
| Design & durability | ||
| Case size | 51 mm | 51 mm |
| Weight | 95 g | 89 g |
| Thickness | 15.4 mm | 14.9 mm |
| Height | 51 mm | 51 mm |
| Width | 51 mm | 51 mm |
| Case material | Titanium | Titanium |
| Sapphire crystal | Yes | Yes |
| Lens / cover glass | Power Sapphire ™ | Sapphire |
| Strap material | silicone | silicone |
| Water resistance | 10 ATM | 10 ATM |
| Water rating (maker) | 10 ATM | 10 ATM |
| Rated dive depth | 40 m | — |
| Display | ||
| Screen size | 1.4″ | 1.4″ |
| Display technology | Memory-in-pixel (transflective) | Memory-in-pixel (transflective) |
| Panel | Sunlight-visible, transflective memory-in-pixel | Sunlight-visible, transflective memory-in-pixel |
| AMOLED / OLED display | No | No |
| Always-on display | Yes | Yes |
| Touchscreen | Yes | Yes |
| Resolution (width) | 280 px | 280 px |
| Resolution (height) | 280 px | 280 px |
| Pixel density | 200 ppi | 200 ppi |
| Battery | ||
| Battery life (smartwatch mode) | 30 days | 28 days |
| Battery saver mode | 48 days | 90 days |
| GPS battery life | 95 h | 89 h |
| GPS battery life (dual-band) | 52 h | — |
| Battery type | Lithium ion | Lithium ion |
| Solar charging | Yes | — |
| Wireless charging | No | No |
| Charging | Garmin proprietary plug charger | Garmin proprietary plug charger |
| Health sensors | ||
| Optical heart rate | Yes | Yes |
| Blood oxygen (SpO2) | Yes | Yes |
| ECG | Yes | — |
| Skin temperature | Yes | — |
| Temperature sensor | Yes | Yes |
| HRV tracking | Yes | Yes |
| Sleep tracking | Yes | Yes |
| Sensors | GPS, GLONASS, Galileo, QZSS, BeiDou, SatIQ technology, Elevate wrist heart rate monitor, Pulse Ox blood oxygen saturation monitor, Barometric altimeter, Compass, Gyroscope, Accelerometer, Thermometer, Ambient light sensor, Depth sensor | GPS, GLONASS, Galileo, SatIQ technology, Elevate wrist heart rate monitor, Pulse Ox blood oxygen saturation monitor, Barometric altimeter, Compass, Gyroscope, Accelerometer, Thermometer |
| Sports & navigation | ||
| Built-in GPS | Yes | Yes |
| Dual-band GPS | Yes | Yes |
| Satellite systems | GLONASS, GALILEO, BDS, QZSS | GLONASS, GALILEO |
| Offline maps | Yes | Yes |
| Barometric altimeter | Yes | Yes |
| Compass | Yes | Yes |
| Multisport / triathlon mode | Yes | Yes |
| Sport profiles | 99 | 99 |
| Dive mode | Yes | — |
| LED flashlight | Yes | Yes |
| Connectivity | ||
| NFC payments | Yes | Yes |
| Wi-Fi | Wi-Fi 4 | Wi-Fi 4 |
| ANT+ sensors | Yes | Yes |
| Smart features | ||
| Calls from the wrist | Yes | — |
| Speaker | Yes | — |
| Microphone | Yes | — |
| Voice assistant | Yes | — |
| Music on the watch | Yes | Yes |
| Storage | 32 GB | 32 GB |
| Third-party apps | Yes | Yes |
| Platform | ||
| Operating system | Garmin OS | Garmin OS |
| Platform | Proprietary | Proprietary |
| Works with | iOS, Android | iOS, Android |
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