Street X

Name: Street X
Brand: Polar

WatchMid-rangereleased 2026

Key specs

Price

$249indicative US list price

Battery

10 d · GPS 43 h10d smartwatch; 43h performance training, 170h eco

Display

AMOLED · always-on

Water resistance

WR50 / 50m (swim)

Weight

48 g

Case size

45mm

Works with

iOS + Android

Subscription

Not required · Polar Flowfree

not confirmed: Running Index is not itemised on the product page, taken from the shared Polar platform, polar.com lists four GNSS constellations, DC Rainmaker reports single-band

What it tracks

Heart & vitals

Resting heart rateHigh accuracy

HRVHigh accuracy

Respiratory rateConsumer

Skin temperaturetracked

Sleep

Sleep durationHigh accuracy

Sleep stagesHigh accuracy

Sleep scoretracked

Sleep efficiencytracked

Activity

StepsConsumer

Active minutesConsumer

CaloriesConsumer

WorkoutsHigh accuracy

Distancetracked

Fitness

VO2maxtracked

Training loadtracked

Recovery / readinesstracked

Sources

https://www.polar.com/en/street-x
https://www.polar.com/en/media-room/polar-debuts-street-x
https://www.dcrainmaker.com/2026/04/polar-street-x-in-depth-sports-review.html

If you want to go deeper

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