I really wanted to keep this watch, but it is so incredibly inaccurate that it boggles the mind. I can be at a complete rest and it'll show my heart rate at 110+. The GPS is pretty far off too. It's off by at least three tenths of a mile on a mapped out trail I walk, and it's only two miles. Anything remotely athletic? Forget it. The heart rate is so high I should be in a hospital.