When comparing Polar M600 vs Xiaomi Mi Band 2, the Slant community recommends Polar M600 for most people. In the question“What are the best fitness trackers?” Polar M600 is ranked 14th while Xiaomi Mi Band 2 is ranked 16th.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Fast GPS
Pro Waterproof
Suitable for swimming.
Pro With Android Wear 2
Pro Good product for the price
It's a great option if you're not looking to invest a lot of money but still want a tracker with a decent set of features.
Pro Same functionality of competitors for half the price or less
You get step tracking, sleep tracking, vibrate notifications, call notifications, clock, alarm, custom actions (via third party apps), heart rate reader (albeit not the most precise one) for the fraction of the cost of the competitors.
Cons
Con No native continuous heart rate monitoring
Curable with 3rd party apps such as Cardiogram.
Con Very unreliable build quality
There are many reports of the track malfunctioning right out of the box or after only a few hours of use. This includes the LED display not working, the heart rate function not working, and buyers being sent used products.
Con Heart rate monitor is very unreliable
Along with frequently not working at all, it has a tendency to be quite inaccurate. It struggles to read the HR when you're sweating as well so isn't useful during exercise.