Fitbit founders launch Luffu Link, an LTE health and safety band

Luffu Link is a screenless wristband from a new startup by Fitbit co-founders James Park and Eric Friedman. It continuously collects activity, sleep, resting heart rate, calories burned, heart-rate variability, and breathing rate, while also supporting voice logging for medications, symptoms, meals, and mood. A built-in GPS tracks location and geofence entry and exit, and a double-press sends a check-in to trusted contacts. The device ships in three colors and is styled to resemble jewelry rather than a traditional wearable or emergency pendant.

The differentiator from existing fitness trackers is the LTE connectivity bundled without a separate carrier plan. A wearer can press a button, speak a message such as a fall or injury report, and Link sends that voice clip plus location, battery level, and recent health data to family members. This means the device functions independently of a phone for both routine logging and emergency communication, which matters for older adults or caregivers who may not always carry a smartphone.

Link is positioned as the hardware companion to the Luffu app, which launched earlier this year and uses AI to organize family health information, learn daily patterns, and flag notable changes. Park explicitly contrasted this approach with the dashboard-heavy model he built at Fitbit, saying the goal is to answer questions like what changed and whether someone needs to know, rather than presenting another set of graphs. The app incorporates voice logs captured on Link into a broader family context, so a medication update or mood note becomes part of a pattern the system can cross-reference with sensor data.

The target market includes family caregivers, independent older adults, and health-conscious adults, with Park citing research that caregivers spend over 27 hours per week on average on caregiving tasks. The startup teased a forthcoming home device that would extend the Luffu system beyond the wrist, suggesting the current band is the first node in a broader family care platform rather than a standalone product. At $250 for pre-order and $300 expected retail, the device sits in the upper range of consumer wearables but below dedicated medical alert systems with subscription fees.

Because only one feed carries this story, there is no independent corroboration of the shipping timeline, the included LTE service terms, or the app's AI capabilities as described. The early 2027 ship date means the product is not yet in customers' hands, and the claims about pattern detection and family coordination are based on the company's own framing rather than tested outcomes. Engineers evaluating the platform should note that the LTE service inclusion details, data privacy model, and API availability for the health data are not specified in the available material.