I can positively endorse it and thanks for the notice of the sale!
I've had mine for 5 years without a glitch and use it all the time.
Although many phones now fulfil this function, at the time I bought it, phone apps to track mileage, workout calories, GPS with google maps, etc., were not widely available nor reliable. My phone doesn't track my heart rate either.
The only way to keep your health is to eat what you don't want, drink what you don't like, and do what you'd rather not.
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