I bought this hoping it would work as well and was pleasantly surprised how fast and easy this works, better than the Dual

This Garmin GLO for aviation works very well in the higher altitudes through heated windows

I found that the CoPilot GPS app for Apple iOS (free with basic functionality, but you can pay for additional features) works pretty well, and you can download maps of a region of your choice (i.e. US and Canada, a 1.5GB download), so you need not have an internet connection to use the GPS

Shipping was too fast and item is working very nice