Garmin fēnix 8 47mm vs Garmin Instinct 3 AMOLED 45mm
Which one should you buy?
Who leads where?
- Health Sensors and FeaturesGarmin fēnix 8 47mm
- KasaGarmin fēnix 8 47mm
- PerformanceGarmin fēnix 8 47mm
- ConnectivityGarmin fēnix 8 47mm
Wins are counted from the official values in the table below; the BUY / CONSIDER / WAIT call comes from each product's own decision box. We do not predict prices.
 GarminGarmin fēnix 8 47mmNo reviews yet |  GarminGarmin Instinct 3 AMOLED 45mmNo reviews yet | |
|---|---|---|
| Key Differences | ||
| Case Size | 47 mm | 45 mm |
| Battery Life | up to 168 hours | up to 168 hours |
| ECG App | Yes | — |
| Water Resistance | 10 ATM | 10 ATM |
| Health Sensors and Features | ||
| Heart Rate Sensor | Yes | Yes |
| SpO2 Sensor | Yes | Yes |
| Skin Temperature Sensor | Yes | Yes |
| ECG App | Yes | — |
| Sleep Tracking | Yes | Yes |
| Crash Detection | Yes | Yes |
| Display | ||
| Size | 1.4" | 1.2" |
| Panel | AMOLED | AMOLED |
| Resolution | 454x454 | 390x390 |
| Always-On Display | Yes | Yes |
| Kasa | ||
| Case Size | 47 mm | 45 mm |
| Case Thickness | 13.8 mm | 14.9 mm |
| Weight | — | 53 g |
| Case Material | Fibre-reinforced polymer (metal rear cover) | Fibre-reinforced polymer |
| Front Glass | Corning Gorilla Glass or sapphire crystal | Chemically strengthened glass |
| Strap Width | 22 mm | 22 mm |
| Positioning and GNSS | ||
| GNSS Receiver | Yes | Yes |
| Dual-Band GNSS | Yes | Yes |
| GNSS Systems | GPS, GLONASS, Galileo, QZSS, BeiDou | GPS, GLONASS, Galileo, QZSS, BeiDou |
| Battery and Charging | ||
| The figure the maker states | up to 168 hours | up to 168 hours |
| What that figure measures | With always-on display on | With always-on display on |
| Charging Type | Garmin proprietary charging cable | Garmin proprietary charging cable |
| Water and Dust Resistance | ||
| Water Resistance | 10 ATM | 10 ATM |
| Performance | ||
| Storage | 32 GB | 4 GB |
| Connectivity | ||
| Speaker | Yes | — |
| Microphone | Yes | — |
| Software | ||
| Phone Compatibility | iPhone and Android | iPhone and Android |
Garmin fēnix 8 47mm leads on 5 of 5 compared specs.
This table is based on manufacturers official specifications. Winning on paper does not always mean a difference in everyday use.