Polar M430 GPS Running Watch with Wrist Heart Rate

The Polar M430 is a GPS running watch with wrist-based heart-rate measurement, activity tracking and runner-focused training features. Its integrated GPS and Polar Flow support workout tracking and progress analysis, while customer feedback reports both useful training functions and potential GPS or phone-sync frustrations.

At a glance

Built-in GPS and optical wrist heart-rate measurement are listed for workout tracking.
Listing describes 24/7 activity tracking and numerous sports profiles.
Polar Flow supports workout planning, syncing and progress analysis.
Runner-focused features include indoor running metrics, Running Index and training-load information.

Price

£67.32Save 48%

Reference price: ~~£129.50~~

Price checked: 14 Nov 2026

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Often bought together

Polar H10 M-XXL Heart Rate Sensor Bluetooth & ANT+ | Fits 66–95 cm chest, ECG/EKG accuracy, HRV tracking, Waterproof

£56.04

Polar H9 XS-S Heart Rate Sensor Bluetooth & ANT+ | Fits 66–95 cm chest, Soft chest strap, Waterproof, Sports & fitness

£36.09

Pros and cons

Pros

Combines wrist heart-rate measurement with built-in GPS, so the listing describes both metrics without requiring a separate sensor for those functions.
The Polar Flow platform is described for planning and analysing workouts and reviewing longer-term progress.
Runner-oriented tools include Running Index, training load and recovery status.

Cons

Customer feedback reports that some users experience phone-sync problems, which may hinder using Polar Flow as intended.
Customer reports on battery life are mixed, with some describing 3–4 days despite the listing's 14-day battery-life claim.

Technical specifications

13 specifications

Identity
Brand	Polar
Model	M430

Display and video
Screen size	1.3 Inches
Screen technology listed	LED

Connectivity and controls
Wireless connection listed	Bluetooth
Control methods listed	Application: Polar Flow

Power and battery
Battery life listed	14 days
Battery type	Lithium Polymer

Dimensions and installation
Form factor	Rectangular
Dimensions listed	7.5 x 9.3 x 11.5 centimetres
Weight listed	0.18 Kilograms

Materials and protection
Water resistance listed	Waterproof

Computing specifications
Storage listed	8 MB

What to know before buying

Listing details to confirm

The listing gives a 14-day battery-life figure, while customer feedback reports 3–4 days for some users. Feedback also differs on GPS performance and Bluetooth phone syncing, so treat the stated battery life and connectivity experience as uncertain for your own use.

What’s in the box

Included

M430 GPS watch
Charging cable
Information note
Manual

Who is it for?

A good fit for

Runners wanting integrated GPS and wrist-based heart-rate measurement in one watch.
Users interested in activity tracking, sports profiles and Polar Flow workout analysis.
Buyers who value runner-oriented metrics such as Running Index and training-load information.

Less suited to

Buyers who need consistently trouble-free phone syncing, given reported connectivity issues.
Anyone who needs a battery runtime they can rely on for a specific duration without checking usage conditions.

Polar M430 GPS Running Watch with Wrist Heart Rate · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.3 / 5 · 8,533 ratings

5 stars66%66%
4 stars17%17%
3 stars5%5%
2 stars4%4%
1 star8%8%

Customer feedback highlights ease of use, accuracy and training performance, but reports are not uniform: some users describe GPS problems, battery life of 3–4 days and difficulty syncing with phones. Those concerns matter for a watch whose listed functions rely on GPS tracking and whose Polar Flow platform is intended for workout syncing and analysis. The listing claims 14 days of battery life, so customer-reported runtime should be treated separately from that claim.