Extremely thin, you don't have to remove your speaker!
Transistor : (4) RM3
Frequency Range : 25-30MHz AM/FM
Input Power : Recommended -> 2.5-3watts max -> 4 watts
Output Power : 100-150w PEP
Size : 4" x 4" x 1"
Fuse : 5amp
NOTE: Do not install in any radio that will key more than 4 watts.
*These units are for industrial, scientific, medical, or export use only. It is a violation of US FCC regulations to operate these units on the Citizens Band or Amateur Radio Services in the United States. Please check regulations in your country before operating these unit.