<P> The Surge was phased out and discontinued in late 2017, replaced with the Ionic in Fitbit's lineup . </P> <P> In April 2012, Fitbit released a weighing scale called the Fitbit Aria . It recognizes users and measures weight, body mass index (BMI) and percentage of body fat of the user . It can keep track of eight individual users and updates information to fitbit.com automatically via Wi - Fi network . The information is also updated to smartphone apps . </P> <P> An updated version of the Aria was announced in August 2017 concurrent with the Ionic . The Aria 2 has been re-engineered for greater accuracy and easier Bluetooth setup . The Aria 2 also has personalized face icons and greetings, compatibility with more Wi - Fi networks, and has an increased weight tolerance of up to 400 pounds . The product was released in late 2017 . </P> <P> At the CES event in January 2016, Fitbit announced the release of the Fitbit Blaze . It is similar to a smart - watch, such as Apple Watch, Pebble Smart - watch, and Android Wear watches . Unlike the Surge, the Blaze comes with a colored touchscreen, and exchangeable strap and frame . Some functionality from the Surge has been retained, such as auto - tracking exercise and heart - rate monitor . Blaze has connected GPS, meaning it tracks location using the connected smartphone's GPS . It can display notifications, including incoming calls, texts and calendar appointments . The Blaze introduces the Sleep Stages feature . </P>

When did the fitbit aria 2 come out