A Whoop band for tracking vulnerable relatives? Fitbit founders launch new screenless wearable with GPS, heart monitoring, sleep tracking and more — and even aspeaker so you can check in

Fitbit founders are launching a new screenless fitness tracker The Luffu Link is designed for caregivers, bringing all your relatives' health data to one place It's available for pre-order now, and will roll out early next yearWatch out Whoop, there’s a new screenless health and fitness wearable on the way — and it’s coming from the founders of...