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  3. Forerunner 70 vs Street X

Garmin Forerunner 70 vs Polar Street X

What Forerunner 70 does better (3) and where Street X wins (3) — every spec side by side.

Garmin Forerunner 70
Garmin · 2026Forerunner 70
4.6Score
3 advantages≈ $250
vs
Polar Street X
Polar · 2026Street X
5.3Score
3 advantages≈ $270
Higher score
5.3Display6.4
3.9Battery life5.0
4.9Health tracking9.8
3.4Build & durability4.2
Dimensions

Size comparison

Forerunner 70Street X
42.6 × 42.611.945 × 4513.8
Forerunner 70Street XDifference
Height42.6 mm45 mm−2.4 mm
Width42.6 mm45 mm−2.4 mm
Thickness11.9 mm13.8 mm−1.9 mm
Weight40 g48 g−8 g

Drawn to the same scale from the official dimensions (front and side).

Why is Forerunner 70 better than Street X?

  1. Battery life (smartwatch mode)13 days vs 10 days+30%
  2. Weight40 g vs 48 g+20%
  3. Thickness11.9 mm vs 13.8 mm+16%

Why is Street X better than Forerunner 70?

  1. GPS battery life23 h vs 42 h+83%
  2. Screen size1.2″ vs 1.28″+7%
  3. Resolution (width)390 px vs 416 px+7%
Specifications

Side by side

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