Fitbit tracker and smartwatch deals help you shape up on Amazon Prime Day

The deals have rolled in for Amazon Prime Day, and they include savings on several Fitbit fitness trackers and smartwatches.Get $30 off four different picks: both the Fitbit Charge 3 regular and special editions, and both the standard Fitbit Versa smartwatch and its special edition.The Fitbit Charge 3 is an essentialist fitness tracker, packing multiple exercise modes and round-the-clock heart rate monitoring with up to a full week of battery life. It doesn’t have GPS tracking, but it is w