Call your local provider… The Peterson Strobo Flip is pretty cool… 34 tempered tunings pre-programmed including dobro with flattened thirds and other cool things… it won't exactly fit in your pocket, but could be a good tool for fly dates and with it's included mic stand mount, great for the visually impaired guitarist! Thanks to Jerry D. for the first look at the latest virtual strobe…

 http://www.petersontuners.com/news/profiles/content_images/profile_30_images/image_one_profile_30.jpg