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Polar M400
3157 reviews
May, 2025
Negative
alaTest has collected and analyzed 3157 reviews of Polar M400. The average rating for this product is 4.2/5, compared to an average rating of 4.3/5 for other products in the same category for all reviews. Reviewers are impressed by the design and reliability. The price and size also get good opinions.
usability, size, price, reliability, design
On average, users rate this product 85/100 and experts rate this product 80/100.
Review analysis
(Based on 3157 reviews)Disclaimer:
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Showing 1 - 60 of 86
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Consumer review (amazon.co.uk)
Amazon.co.uk review summary for Polar M400
alaTest has collected and analyzed 10 user reviews of Polar M400 from Amazon.co.uk. The average user rating for this product is 3.4/5, compared to an average user rating of 4.2/5 for other products in the same category on Amazon.co.uk. People are impressed by the reliability and design. The usability and price are also mentioned favorably.
price, usability, design, reliability
60% of the reviews on Amazon.co.uk give this product a positive rating.
May, 2025
Consumer review (amazon.com)
Amazon.com review summary for Polar M400
alaTest has collected and analyzed 40 user reviews of Polar M400 from Amazon.com. The average user rating for this product is 3.9/5, compared to an average user rating of 4.3/5 for other products in the same category on Amazon.com. Reviewers really like the design. The usability is also appreciated, whereas there are some less positive opinions about the size and reliability. There are some mixed reviews about the price.
usability, design
reliability, size
80% of the reviews on Amazon.com give this product a positive rating.
May, 2025
Expert review by : Simon Munk (trustedreviews.com)
Polar M400
The result is a device that's surprisingly functional, particularly when you consider it costs barely more than a higher-end fitness band – if you already have a Bluetooth chest strap, it's £30 cheaper still. It lacks one or two notable features, but...
Tracks GPS, heart rate and daily fitness ; Slim and light for GPS tracking ; Excellent features for price
No underwater heartrate monitoring ; No route navigation ; Chest belt needed for heart rate
Apr, 2015
Expert review by : Mark Mayne (techradar.com)
Polar M400 running watch review
The owning-ness of the long distance runner
Rock solid run tracking going cheap ; Accurate heart-rate monitor ; Decent value too
Separate HR strap may concern some ; Unlikely to win beauty contests ; Slow syncing
An honestly priced, rugged and reliable running watch. It's not glamorous, but then nor is slogging through sleet at 7am. The Polar M400 won't let you down, and the heart-strap bundle is a great all-round package.
Jul, 2015
Partner Source
Expert review by (t3.com)
Polar M400 running watch review
How does Polar's new running watch stack up?
Easy setup ; Detailed workout breakdown ; microUSB charger
Sporty design
Nov, 2014
Partner Source
Expert review by : Dan Graziano (cnet.co.uk)
Polar M400 review: A feature-packed GPS running watch that can also track your steps and sleep
The Polar M400 has almost everything you would want in both a running watch and daily activity tracker.
The Polar M400 has good battery life, can sync wirelessly with your phone, includes GPS and activity tracking, charges through a normal Micro-USB and supports wireless heart-rate monitors. It also has automatic sleep tracking, an always-on display with...
The big design may not be appropriate for all environments. There's no vibration for alerts or a silent alarm.
The feature-packed and waterproof Polar M400 offers a good set of features for beginners and advanced runners a like. It also provides feedback on your daily activities and sleep.
Nov, 2014
Expert review by : Dan Graziano (cnet.co.uk)
Polar M400 update adds smartphone notifications
An update to the Polar M400 will transform the GPS running watch and activity tracker into a full-fledged smartwatch.
Expert review by : Jill Duffy (pcmag.com)
Polar M400
The Polar M400 fitness tracker logs your outdoor runs with GPS and measures how much activity you get all day long. It's a compelling choice for runners, but a little too chunky to work as an all-day wearable.
GPS running watch and all-day fitness tracker. Includes sleep tracking. Waterproof. Supports push notifications. Available in several colors. Durable. Great app and tracking stats for athletes. Uses micro USB charger. Long battery life.
Chunky, inelegant design. Prominent Polar logo. Slow syncing. Monochrome screen.
Head-to-head, though, I prefer the Garmin Vivoactive, a similar watch at a similar price that comes with a more sophisticated color touch screen, plus apps you can install to further your experience. The Vivoactive is also much sleeker and more...
Mar, 2016
Partner Source
Expert review by : Dan Graziano (cnet.com)
Polar M400 review: A feature-packed GPS running watch that can also track your steps and sleep
The Polar M400 has almost everything you would want in both a running watch and daily activity tracker.
The Polar M400 has good battery life, can sync wirelessly with your phone, includes GPS and activity tracking, charges through a normal Micro-USB and supports wireless heart-rate monitors. It also has automatic sleep tracking, an always-on display with...
The big design may not be appropriate for all environments. There's no vibration for alerts or a silent alarm.
The feature-packed and waterproof Polar M400 offers a good set of features for beginners and advanced runners a like. It also provides feedback on your daily activities and sleep.
Nov, 2014
Expert review by : Dan Graziano (cnet.com.au)
Polar M400 review: A feature-packed GPS running watch that can also track your steps and sleep
The Polar M400 has almost everything you would want in both a running watch and daily activity tracker.
The Polar M400 has good battery life, can sync wirelessly with your phone, includes GPS and activity tracking, charges through a normal Micro-USB and supports wireless heart-rate monitors. It also has automatic sleep tracking, an always-on display with...
The big design may not be appropriate for all environments. There's no vibration for alerts or a silent alarm.
The feature-packed and waterproof Polar M400 offers a good set of features for beginners and advanced runners a like. It also provides feedback on your daily activities and sleep.
Nov, 2014
Partner Source
Expert review by : Mike Prospero (tomsguide.com)
Polar M400 Review
For a $200 GPS watch, the Polar M400 is a very capable crossover device. It's comfortable; the display is easy to read, and I really like that it can track your activity even when you're not using the GPS feature. Almost all other GPS watches lack this...
Big, bold display ; GPS tracking ; Good battery life
No built-in heart-rate monitor
The Polar M400 is a GPS watch that acts as an all-day activity tracker, making it useful even when you're not running or cycling.
Nov, 2014
Expert review by : DC Rainmaker (dcrainmaker.com)
Polar M400 GPS & Activity Tracker Watch In-Depth Review
Today, Polar has announced their latest watch, the M400. This running focused GPS watch also contains day to day activity tracking (i.e. steps and sleep) along with smartphone connectivity. The unit priced at $179US/€159EUR, is very competitively...
Sep, 2014
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