Latest model offers messaging, activity tracking and music streaming from Deezer and Spotify wherever there is a Verizon data connection.
Unlike Apple's newest watch, which has batter power for around one day, the Withings device means wearers can monitor for atrial fibrillation, or AFib, events, for 12 months.
The tech giant beat FitBit and Samsung to the top spot.
Fossil Sport Smartwatch is built around the new Qualcomm Snapdragon Wear 3100 platform and the latest Wear OS by Google operating system.
Tissot is expected to be the first watch brand to launch a model using Swiss OS, a move that suggests it will be focused on the fitness end of the market.
Touchscreen timepiece running Wear OS by Google, is compatible with iOS and Android phones and offers features such as standalone GPS and contactless payments.
The watch goes on sale this week with prices ranging from $1095 to $1230. Quick change straps are offered in rubber, nylon or rubber for $130.
Swiss brand responds to rising demand for secure and accessible data and insights among smartwatch users
The watches come in an oversized 46mm case in gold-tone, black, silver and coal stainless-steel variations.
The next gen smartwatch offers the latest in wearable technology, including heart rate tracking, NFC payment capabilities, and GPS tracking.