Surprisingly, the tactical tactix 7 is currently cheaper than the fenix 8 and lasts almost twice as long.

Short answer

tactix 7 AMOLED - up to 31 days, tactical features and a lower price. fenix 8 AMOLED 47 mm - newer generation, more compact, BeiDou and QZSS.

Key differences

SpecGarmin tactix 7 AMOLEDGarmin fenix 8 47mm AMOLED
Display1.4", AMOLED, 454×4541.4", AMOLED, 454×454
Memory32 GB32 GB
Battery lifeup to 31 dayup to 16 days
ConnectivityBluetooth, ANT+, Wi-FiBluetooth, ANT+, Wi-Fi
NavigationGPS, GLONASS, GalileoGPS, GLONASS, Galileo, QZSS, BeiDou
NFCyesyes
Sensorsheart rate, barometer, compass, gyroscope, temperatureheart rate, barometer, compass, gyroscope, temperature
Protection10 ATM10 ATM
CompatibilityiPhone, AndroidiPhone, Android
Dimensions, weight51×51×14.9 mm, 96 g47×47×13.8 mm
Pricecurrent pricescurrent prices

Specs come from the device pages on Smartphone.ua.

What's the same

1.4" AMOLED 454×454, 32 GB, Wi-Fi, NFC, 10 ATM.

Case

51×51×14.9 mm and 96 g vs 47×47×13.8 mm.

Battery life

Up to 31 vs up to 16 days.

Verdict: who should buy which

  • Battery life and price - tactix 7 AMOLED.
  • Compactness and novelty - fenix 8 AMOLED 47 mm.

FAQ

How much storage?
32 GB.

Is there Wi-Fi?
Yes.

Which is cheaper?
The tactix 7.

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