Garmin and Fitbit have been going at it for years. Both companies offer a compelling array of products complete with high-end smartwatches. But it’s the fight for the low-end that’s compelling and Garmin just lobbed a monster of a product across Fitbit’s bow. Called the Vivofit 4, the $80 activity tracker features a color screen, the ability to detect different activities,… Read More on Tech Crunch