BT Wearables LLC has filed an Eastern District of Texas suit against Zepp Health (2:25-cv-00318) over the provision of its smartwatches, targeting functionality that “calculates the calories burned by the user and transmits this data to a remote device; includes a user input device for selecting an exercise; includes an accelerometer and heart rate sensor; executes speech commands from the user; couples to a mobile telephone; and identifies the activity of the user”. Seven patents have been asserted, five of them already in suit against prior defendants Citizen Electronics (Citizen Watch) and Dillards.