I have a new in the box Ladezma Falconry GPS system with instructions for sale. I paid $375 for it new plus shipping from Europe and never used it. I don't think is has Altitude reading capabilities. Just GPS on your phone or device. Also I don't think cell phone type matters with this unit. $150, free shipping and its yours. Email me a etan68@hotmail.com. I hate typing on this slow forum site. Comes with all sorts of stuff. Charger, backpack etc.
Nate