i purchaced a skytronic gfx about 6 months ago and used it around 5 times before the screen would not function sometimes, and then sometimes the screen would be inverted. After i contacted parasport they instructed me to ship it back to them. 3 Months later and after lots of Internaional calls and Emails i recieved it back. NOW the damn thing doesnt even turn ON!! WHat kinda crap is that! I toallly do not recomend this unit. there custermer support sucks, They dont reply to your e-mails. and they keep giving you the runaround when you call.