Product Comparison: Polar M600 vs Polar M400

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General Specifications
About the Product
Meet your health goals with this Polar Fitness smart watch. It can be customized for the sport you're participating in to help you train more effectively, and it monitors distance, steps taken, calories burned and heart rate. This Polar Fitness smart watch provides sleep and activity tracking for a complete profile.
Developed for runners who want a comfortable and durable running watch with sporty design and advanced GPS and training features. Track and record running as well as your other exercise, and monitor your performance accurately. Connect with the Polar Flow mobile app and stay active and motivated.
Key Specs
Display Type
Monochrome LCD
Display Size
1.3" x 1.3" (240 x 240 pixels)
0.94" x 0.94" (128 x 128 pixels)
Built-In GPS
Other Sensors
Optical heart rate monitor, Accelerometer, Ambient light sensor, Gyro
Optical heart rate monitor
What customers say about "Key Specs"
Polar M600 Sports Smart Watch
  • GPS is so quick, accuracy is pretty nice too
  • I like the quality, gps works good, no complaints.
  • Design of this device is so good, looks very pretty on my hand, also i like the display, easy to read when i run
  • GPS may not be very accurate, sometimes i have issues.
  • For such a gigantic watch, the actual active part of the screen is quite small and it is a bit challenging to read at times, compared to my previous android wear devices.
Polar M400 GPS Smart Sports Watch
  • The GPS work perfectly & quickly & accurately 100% of the time but this device has a large, easy-to-understand, perfectly user-friendly display!!
  • Perfect GPS, very occurate, very stable!
  • I love that display, convinient size and good colors!
  • GPS is a little finicky at times, takes a while to lock into the signal and controls could be better.
  • I always have a GPS finding issues, so frustrated!
Size & Weight
1.7 in.
2.2 in.
1.4 in.
1.96 in.
0.5 in.
0.47 in.
2.2 oz.
1.7 oz.
Tracking Features
Pace, Speed, Time, Distance, Route
Pace, Distance
Vibration Alerts
Clock Features
Time/date, Alarm
Time/date, Alarm
4GB internal storage + 512MB RAM
30 h training with GPS and heart rate depending on your language settings
What customers say about "Functionality"
Polar M600 Sports Smart Watch
  • Sleep tracking works well. And plenty of metrics to compare from workouts, like speed, heart rate, and altitude.
  • I liked the ease of an on-watch, simple, a/b interval timer.
  • Vibration alerts are good. I always feel it when i run without problems!
  • The non-removable 4GB storage while a first compared to other smartwatches, is filled quickly. I would like to see 8GB options.
  • Unfortunately, the vibration was weak enough that I ended up missing more than half of the alerts.
Polar M400 GPS Smart Sports Watch
  • It is pretty cool. It gives you all kinds of info with maps, graphs, and charts.
  • This device records a ton of data and displays all of that data on the screen for you, and it even has a daily diary right on the screen.
  • The best part may be that I can set two interval timers to count down and alarm in continuous cycles, so I don't have to keep stopping and starting them during my run.
  • Like everyone else, I find the beep alerts hard to hear and wish it would vibrate, but I'm glancing down often enough that it isn't much of a problem.
  • The thing that I don't like is that it doesn't vibrate and it's kind of hard to hear it beep when Im running.
Wi-Fi / Bluetooth
USB / Bluetooth
IOS, Android
Android, IOS
Water rating - 5 ATM
Wristband Material
Battery Type
Rechargeable Lithium Polymer
Rechargeable 240 mAh lithium polymer
Battery Life
Operating time (Android) 2 days / 8 hours of training ; Operating time (iOS) 1 day / 8 hours of training
Battery duration up to 8 hours of training time with GPS and optical heart rate. Daily training session, continuous heart rate tracking and notifications: 5 days No training sessions, no notifications, continuous heart rate tracking: 14 days
Running Index, Running Program, Sleep Plus, Activity guide, Activity benefit, Smart Calories, Castomizable sport profiles, Changeable silicone wristbands
Running Program, Running Index, Continuous Heart Rate, Smart Calories, Sleep Plus, Training Load, Recovery Status
What customers say about "Features"
Polar M600 Sports Smart Watch
  • The battery lasts a full 24+ hours with a 1-hour GPS training session. As long as I charge it daily, like when I shower in the AM, I never have to worry.
  • After testing it on multiple 5-6 mile runs, the battery drain averages just around 8% (40-45 mins timeframe)! That tells me that this watch could last 8-10 hours using GPS/HR/music streaming.
  • Battery: I've been plugging it in every night. With a couple hours of GPS with backlight on, there is no problem getting to the end of the day.
  • The main reason for purchasing this device is a battery lifetime. Highly recommended!
  • If you are running with GPS, heart rate sensor, and streaming music (even with 3G cellular service turned off), you’re lucky to get over an hour of battery before it dies.
Polar M400 GPS Smart Sports Watch
  • It has full support for the Mac computer, so you can plug it into your Mac, and it will sync to the Polar website.
  • Battery life is fantastic. I have never had trouble charging/syncing this watch.
  • I've been happy with battery life so far, it will generally last for a week of workouts no problem.
  • Battery life is pretty good, good purchase!
  • I have one complaint it's that the battery is only lasting 2-3 days.
Warranty / Certifications
Manufacturer Warranty
2 year(s)
2 year(s)
Other Information

Price History

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