TurtleCell LLC is an Ann Arbor-based firm that has developed a thin polycarbonate protective case for smartphones with built-in retractable earbuds that don't tangle.

The business was founded in 2011 by Nick Turnbull and Paul Schrems, who at the time were engineering students at the University of Michigan.

In the News

University alums' Ann Arbor company expands to national retail – Michigan Daily, April 29, 2015

U-M startup TurtleCell leaving Ann Arbor SPARK incubator for new Kerrytown office – MLive, June 18, 2014

A case for TurtleCell: Fledgling firm aims to put zip in earbud storage – Crain's Detroit Business, Dec. 15, 2013