Because my old Ray 55 e was broken, I would need a new one. With all my questions were answered more than friendly. I have been provided all the required data in advance, the service is simply unique,
The system works flawless, low noise and with GPS independently. Unfortunately, the display is only read directly from the front and less well from other angles. Black writing on a red background is rather unfavorable. The font is too small to read quickly. This applies to the entire display. The speaker is no longer usable at full volume. Also for the price in my opinion less practicable and too expensive.