I had high hopes for the Polar A370. The Polar M430 is one of the best things I've ever put on my wrist . True, that's not an enormous list, but I have reviewed a lot of wearables, and the Polar M430 has passed the test of time.

The Polar Flow app is excellent; Micro-USB charging

Overpriced; considering its features; Questionable build quality; Unattractive design; No GPS

Polar's new A370 fitness-tracking wristband is a course correction from its predecessor, the A360 , which was lacking in a few key areas. The A370 improves upon the last-gen model, with continuous heart-rate monitoring, GPS (sort of), an easier-to-fasten band clasp and a new sleep-tracking tool...

Large; colorful display; Accurate heart rate-tracking during outdoor workouts; Useful sleep insights; Waterproof

Connected GPS can be unreliable; Battery life could be better; Too expensive for what it offers

I'm a recent Polar convert. Ever since reviewing the M430 in October 2017 it has been a faithful companion on one wrist on race day. Aside from being a generally brilliant running companion, it also does a great job of highlighting when other wearables I'm reviewing aren't pulling their weight.

Polar is a company known, historically, for making heart rate sensors and hardcore GPS tracking watches - but its new fitness tracker, the Polar A370, is far more mainstream.

Phone notifications; Can GPS track runs with the help of a phone; All-day HR tracking

Only 2-day battery life with all features switched on; Chunkier than the competition; GPS not in-band

The fitness tracker has come a long way since the humble days of the Fitbit Flex, and the Polar A370 is the perfect example. Many of the features once only found in running watches are becoming more of a norm in more basic wearables.

24/7 tracking; Added sleep smarts; Connected GPS

Iffy Bluetooth connectivity; HR accuracy still slips; Chunky (but not all that funky

heart rate not accurate all the time and battery life is very short... not sure why?

Arrived with no clasp to buckle the strap, and the box was dirty and damaged. It looked like a display model. Resulted in purchasing a 3rd party strap from another company to replace the damaged one due to the Process of refunding and exchanging being such an inconvenience.

The fairly priced Polar A370 isn't the most attractive fitness tracker, but it records training sessions and daily activities with aplomb.

Continuous and accurate heart rate monitoring; In-depth sleep analysis; Can create custom training programs; Waterproof; Competitively priced

No onboard GPS; Clunky design; Grainy screen

The Polar A370 isn't particularly flashy, but it's good at what it does. It excels as a sports watch for training and tracking workouts, thanks in part to an accurate optical heart rate monitor. It tells you how different activities affect your body, whether you complete an easy recovery run or a cardio-intense fitness class. And sure, it offers all-day activity tracking and notifications from your phone for good measure. Yes, there are better and sleeker all-day fitness trackers out there, but not at the A370's price point ($149.95). If you're primarily looking for a sports watch to be your companion while training, it'll make you very happy. Design, Comfort, and Battery Life The Polar A370 is nearly identical in style to the device it replaces, the A360. Both are waterproof and have a rectangular face with a micro USB slot on the back for charging (hooray for non-proprietary chargers!). The A370 weighs the same, too, at 1.1 ounces for size S and 1.3 ounces for M/L. You can swap...

The fairly priced Polar A370 isn't the most attractive fitness tracker, but it records training sessions and daily activities with aplomb.

Continuous and accurate heart rate monitoring; In-depth sleep analysis; Can create custom training programs; Waterproof; Competitively priced

No onboard GPS; Clunky design; Grainy screen

decent ..... not my favorite will be going back to my Tom Tom.... I really hate the fact that the screen goes black and I have to push the button to see my heart rate...so annoying!!