The Fitbit Air is a new fitness tracker priced at $99, making it an affordable option for those looking to monitor their health without the burden of subscription fees for basic features. It offers a lightweight design, measuring 35 x 17 x 8 mm and weighing just 5.2 grams, which enhances comfort, especially during sleep. The device has been tested against more expensive models and provides reliable tracking of heart rate and fitness metrics, making it a strong choice for fitness enthusiasts. Additionally, the battery life is impressive, lasting up to seven days with quick recharge capabilities. However, the Fitbit Air does not include GPS or smart features, which could be a drawback for users who prefer more advanced functionalities. For those who want a screen and additional features, alternatives like the Fitbit Charge 6 may be more suitable, albeit at a higher price point of $159.