went to a local park today, temp was 41 degrees and the menue button on my xterra was like in slow motion when I tried setting it up to hunt. Several times it would not show the menue at all and then after repeated pressing it finally showed the volume control but would not proceed on to the other menue items. I tried resetting to factory default but nothing seemed to help. Not for sure if it was the cold weather. I had a xterra 50 before this one and the menue button went flat and had to send it in to minelab. I can still feel the little snap in the menue button on the 70.