Wearable Index
Luffu · Band

Link

Preorder

The Luffu Link is a $250 sensor band, on preorder for 2027. Caregiver-focused screenless band from Fitbit's founders, combining continuous health tracking, voice logging, GPS and included LTE service for family check-ins and help messages.

Compare this device
Luffu Link — band worn on the wrist
Image sourceLuffu

Generations

GenerationYearStatusPriceWeight
Link 2027 Preorder $250 Not disclosed

Specifications by generation

Link

2027Preorder

Caregiver-focused screenless band from Fitbit's founders, combining continuous health tracking, voice logging, GPS and included LTE service for family check-ins and help messages.

Category
Band
Worn
Wrist
Release
2027
Price
$250
Weight
Not disclosed
Sensors & hardware
  • Biometric PPG heart rate
  • Motion Accelerometer
  • Location GPS
  • Audio MicrophoneSpeakers
  • Input Button
  • Connectivity Cellular (LTE-M)Bluetooth

Developer access

  • SDK / APINot verified

    The reviewed public product material does not establish developer access. Unknown does not mean unavailable.

Vendor servers
required

Link requires the Luffu app Family Plan, sold separately (announced standard USD 19.99/month for up to four members, extended USD 29.99 for up to eight; subject to change). Included LTE is not an included Family Plan. The privacy notice describes vendor processing, hosting and AI service providers for family health and voice/chat features.

Openness

  1. hardwareNot verified
  2. firmwareNot verified
  3. companion appsclosed/proprietary
  4. SDKNot verified
  5. backend servicesNot verified

Not yet verified: documentation and app distribution.

Openness, servers & distribution
hardware

Schematics, mechanical designs and firmware publication were not verified.

firmware

Source availability and licensing were not established in this review.

companion apps

The app EULA licenses Luffu services and restricts decompilation, disassembly and reverse engineering; no open-source grant for the companion app was established.

SDK

Source availability and licensing were not established in this review.

backend services

Source availability and licensing were not established in this review.

Direct / local access

Built-in LTE-M and GPS allow phone-independent connectivity, not verified vendor-independent processing or a direct developer API.

Third-party cloud

Unnamed hosting and AI / machine-learning providers

App distribution

Third-party app distribution was not verified.

A companion app or integration is not evidence of a third-party app store.

Company & funding

Luffu, Inc.

Self-funded at February 3, 2026 launch, reported by Axios; current outside-financing state unknown

Company

Current device/service privacy notice and app agreement name Luffu, Inc.; no parent relationship to Fitbit or Google is established by its founders’ former roles.

Not yet verified: disclosed funding, valuation, round count, round history and named investors. A missing record does not imply zero funding.

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Independent index — figures are approximate and editorial, not official spec sheets. Methodology. Last reviewed 2026-10-31.