Sizometry
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Street X Front view

Official manufacturer render.

Polar

Street X

Watch2026Released
  • 1.3-inch AMOLED
  • 28 g
  • From $250

Physical specifications

1.3"

Display size

28 g

Case weight

45.0 mm

Case height

45.0 mm

Case width

13.8 mm

Case thickness

Release and pricing

Announced
March 25, 2026
Released
March 25, 2026
Starting price
$250
Market
US

Display

Display size
1.3"
Display technology
AMOLED
Resolution
416 × 416
Protection
Corning Gorilla Glass 3 (AF + DLC coating)

Performance

Expandable storage
No

Battery & charging

Charging standard
Proprietary / USB-C. Smartwatch mode up to 10 days; performance training (GPS + HR) up to 43 h; eco training up to 170 h (power-save — not everyday life). Complete watch 48 g with wristband; body 28 g without. On-device storage 32 MB
Battery type
Li-Pol (385 mAh)

Build & durability

Frame
Bio-based plastic (PA11+8GF); aluminum; stainless steel
Back
Bio-based plastic
Front
Corning Gorilla Glass 3
Ingress protection
WR50 (50 m); MIL-STD-810H

Connectivity

Cellular
GPS / Galileo / BeiDou / QZSS (single-frequency; no dual-frequency GNSS), Route guidance; compass; barometer, Precision Prime™ OHR GEN 3.5; skin temp GEN 1 (no ECG / SpO2 / Elixir suite), Integrated LED flashlight (white / red), Polar Flow
Bluetooth
Bluetooth® LE

Sources and measurement notes

Sizometry compares published specifications and calculates differences. These are not hands-on measurements or tests of comfort, performance or pocket fit.

Check the exact model, year, region and configuration on the linked page. References may cover several variants. Folded and unfolded dimensions differ; cases and camera protrusions may change the space a device needs. Drawings share a relative scale and are not calibrated to life size on your screen.

Sizometry Analysis

Everyday usability

Estimated from the watch’s size, weight, battery, display, and intended wearing conditions.

  • Wrist comfort

    Moderately noticeable

    You will notice its presence on the wrist, though it should stay manageable for daily use.

  • Sleep comfort

    Noticeable

    Its thickness and larger footprint may remain noticeable when sleeping.

  • Battery usability

    Multi-day

    Multi-day battery life makes continuous wear and sleep tracking easier.

  • Screen and controls

    Easy to use

    Detailed brightness information is unavailable, so outdoor visibility cannot be fully assessed.

  • Workout usability

    Excellent

    Its low weight, water resistance, and GPS support make it well suited to running and gym sessions.

Models and configurations

Connectivity
GPS / Galileo / BeiDou / QZSS (single-frequency; no dual-frequency GNSS)Route guidance; compass; barometerPrecision Prime™ OHR GEN 3.5; skin temp GEN 1 (no ECG / SpO2 / Elixir suite)Integrated LED flashlight (white / red)Polar Flow

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