I wanted to share info I got from ConsumerAdvocate.org They research products and provide recommendations. They may add value to your Nordic Walking by helping you extend your training times. Here is their Fitness Tracker top picks:
Fitbit
Best for: Motivation
The Fitbit Ionic offers on-screen workouts and memorizes over fifteen exercise modes. They also have a model with a lot more capability: The Fitbit Versa 2. – this one offers Fitbit Pay for on-the-go payments, voice commands, Amazon Alexa, and more practical features that make certain things easier for daily use.
Polar
Best for: Athletes
The Polar A370 can last up to four days on a single charge a shows a whole suite of stats and graphs that chart your progress with clinical-like accuracy. The hybrid smartwatch version has even more applications and granular tracking features.
Xiaomi Mi Band
Best for: Affordability
For $40 the Xiaomi Mi Band offers just as many apps and features as higher-priced trackers.
It has a locator option within the mobile app. You can buy it from several online retailers like Amazon, Walmart, and eBay.
See their complete reviews [here].
Carpe Diem!