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Good practice Imported

Sunu Band — A Sonar Wristband Born From a School for the Blind in Guadalajara, Discontinued After a Decade

Mexico · Guadalajara · See the Mexico profile · See the Guadalajara profile

Evidence: Descriptive / self-reported Top 63% 60/100 · Ask Evidence Copilot about this practice

Sunu Band, a sonar wristband for blind users born from a school-for-the-blind project in Guadalajara in 2013, reached over 50 countries and $1M+ in revenue before being discontinued by 2024 — a cautionary case for assistive hardware.

400000 USD
Seed funding raised (2019-03)
1000000+ USD
Cumulative revenue at peak
50+
Countries reached at peak
Sunu Band — A Sonar Wristband Born From a School for the Blind in Guadalajara, Discontinued After a Decade

Details

Maturity
Discontinued
Promoter
Sunu
Period
2013–2024 (discontinued)
Keywords
assistive technology, wearables, disability inclusion

Context

Sunu Band was a wrist-worn sonar device for blind and low-vision users, using ultrasonic echolocation and haptic vibration to detect obstacles up to roughly 16 feet away, combined with GPS and voice navigation. The project began in 2013 in Guadalajara, Mexico, when co-founder Marco Trujillo ran a community project at a local school for the blind.

Activities

The resulting company operated between Cambridge, Massachusetts, and Zapopan, Mexico, and went through Y Combinator's Summer 2017 cohort.

Results

Sunu raised a $400,000 seed round in March 2019 and reported over $1 million in cumulative revenue with users in more than 50 countries at its peak.

Conclusions

By 2024, independent trackers and accessible-technology directories listed the Sunu Band as discontinued. Its trajectory illustrates the sustainability risk facing hardware-based assistive technology from small ventures, even those with clear community-defined origins.

Implementation
Indicative cost
Medium (€50k–€500k)
Time to results
Long (> 3 years)
Staffing & skills
Sunu founding team (Marco Trujillo and co-founders), Y Combinator (Summer 2017 accelerator cohort)

Conditions for success

  • grassroots co-design origin at a school for the blind
  • cross-border adoption reaching over 50 countries

Common failure modes

  • hardware venture wound down by 2024 with no public post-mortem
  • small-venture assistive hardware faces sustainability risk even with demonstrated reach

Commonly funded by

Own resources / municipal budget Philanthropic / foundation funding

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Data sources

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