This is a model of the Wrist Computer that Mark Watney wears in Ridleys Scott's movies "The Martian" based on the book by Andy Weir.
The computer is sized to fit an iPhone 5.
This model has been broken up to accurately be printed the way the movie prop was printed. I have also included a Parasolid file for those who wish to break it up for their own purpose.
Note that while you can print the 4mm rod piece. Id suggest using a metal rod instead.