Charge 6 is Fitbit’s flagship fitness tracker band. The follow-up from Charge 5 features some tweaks under the hood, but little in the way of design changes. To the untrained eye, they look the same.

A basis point is one hundredth of a percent, or 0.01%. We describe mortgage rates’ ups and downs in basis points because they simplify comparisons. NerdWallet’s rates are expressed as an annual ...