Flex came as a package with two silicone bands, and a tap-controlled sensor that fit inside either, depending on the size of your wrist. Now, Fitbit sells separate small and large sizes. This shouldn’t be a big deal for most users, as the activity tracker is not really meant to be shared, but there are fewer sizing options in a box now. Also new is the USB-based charger. Instead of removing the sensor and clipping it into a holder on the cable,…
