I'm relatively new to these devices as my 2019 Ranger Lariat prompted my interest in getting some smart phone capability in the current 2005 Mustang and recently sold 2004 Marauder. They work well enough-the ROAV T1 (on the right) went with the sale of Marauder recently. The new ROAV T2 (on the left) is the most recent model that I use in my 2005 Mustang. The T2 is actually a bit smaller than the image depicts-still in the same price range (under $30). Still learning how the T2 operates-it will scan and find an empty channel on its own and is supposed to have hands free phone operation capability (haven't tried the telephony operation yet).