"Missing on VERY important feature"1.5 starson by webstermiller
Pros: Easy to use and intuitive
Cons: Doesn't support automatic on/off
Summary: If it weren't for one major ommission the TT One would be excellent. However, it does not support the ability to automatically turn on/off when external power is . You ALWAYS have to manually turn it on/off and, making matters worse, you have to hold the power button down for 3 seconds in order to do so. For those of us with switched 12V power outlets the ability for the ignition to turn the unit on/off is GREATLY desired. Magellan and Garmin support this and I can't imagine why TomTom does not.