The standard Inspire's features stop there, while the Inspire 2, Inspire HR, Charge 3 and Charge 4 add several more, marking the biggest differences between these trackers aside from their size and appearance. Automatic sleep tracking, silent alarms, Reminders to Move and hourly activity are all also on board all models though, along with smartphone notifications.Īll models, except the standard Inspire, also offer advanced sleep stages and Sleep Score, while the Charge 4 also offers Smart Wake, which uses machine learning to wake you up at an optimal time.Īll models also have Fitbit's SmartTrack, which is a feature that allows trackers to recognise certain activities and record them in the exercise section of the Fitbit app in order for users to categorise them and see a more detailed account of what they have done.

The Fitbit Inspire models and the Fitbit Charge 3 and Charge 4 all measure steps taken, distance travelled, calories burned, active minutes and continuous heart rate, though the latter is not present on the standard Inspire, only on Inspire HR and Inspire 2. They also have a slimmer profile than all the Inspire models. The Fitbit Charge 3 and Charge 4 are a little larger than the Inspire devices, making them more obvious when worn, though the Charge 3 and 4 have a more premium finish thanks to their aluminium bodies. This button is physical on the Inspire and Inspire HR and inductive on the Inspire 2.Ī heart rate monitor and charging pins sit beneath the Inspire HR and Inspire 2, with only the charging pins on the Inspire, and all Inspire models are water resistant up to 50-metres. The Inspire 2, Inspire HR and Inspire have a smooth silicone strap as standard, which is interchangeable and fastened with a buckle.Īn OLED touchscreen display is present on the top of all the Inspire devices and there is also a singular button on the left for returning to main menu and quick access to settings.

They also all opt for a plastic body over stainless steel, making for light, small and discreet devices with the Inspire 2 a little softer and rounder than the Inspire and Inspire HR overall. The Inspire 2, Inspire HR and Inspire all feature a similar design, which is smaller than the Charge 3 and Charge 4.

Fitbit inspire hr charger