https://www.ecoustics.com/products/treehouse-labs-bikn-smart-case/
Treehouse Labs BiKN Smart Case for iPhone - ecoustics.com
Nov 30, 2017 - Treehouse Labs announced BiKN for iPhone (pronounced "beacon") which combines a radio-enabled smart case for iPhone driven by the myBiKN app and clip-on
treehouse labssmart casefor iphone