Fitbit went back to basics with last year’s Charge 4, reinstating a fitness tracker with onboard GPS into its lineup after many years of leaving that hole unfilled. With the introduction of the $180 Charge 5 this year, the company is trying to modernize its most capable band. It’s thinner, lighter and less bulky than the Charge 4 and it now has some features previously reserved for Fitbit’s full-fledged smartwatches, the Versa and Sense.That translates to a $30 increase in price, and on top of that, Fitbit’s hoping you’ll pay $10 each month to access your historical health data (and more) through Fitbit Premium. The Charge 5 certainly feels more polished than the Charge 4, but those who prefer bands to smartwatches will find that most core features remain the same — and you’ll have to decide if the perks of Premium are really worth paying for.DesignI was surprised by how much of a difference was made by Fitbit updating the design of the Charge 5. It’s 10 percent
