Usability check / FFU


We check the usability and the function of the product according to the expectations of a typical customer. Special attention is given to the criteria promised by the manufacturer.

The usability check/FFU includes the following inspections:

  • packaging: safety, description and layout
  • manual: relevant keywords and correctness, understandability and completeness
  • haptic, ergonomics
  • functionality, handling, performance

The usability check/FFU includes a test report with a description and assessment of the above mentioned test items as well as an overall rating. The product will receive a certificate if it complies to the customer expectations.


Some selected test reports are listed below (in german language):

test report: Dual DAB 70



usability check

sample certificate for usability check