This Amplified CB External Speaker for mobile radio SP604A is really loud, with built-in amplifier

& volume knob on the top. It attaches to any CB radio devices by a 3.5mm plug, coming with 6ft cords and swivel mounting bracket for installation. SP604A is compatible with CB radios, scanners, and other radio equipment with a 3.5 mm jack for connecting external speakers.

Specification

Impedance : 8ohm /4ohm
Power handling: 5W Max
Speaker: 50*90mm

Cord Length:  6ft with 3.5mm Mono plug
Size: 128x66x57mm

Perfect For
- External Speaker for GPS navigation system
- Extension CB Speaker for two way radio & audio amplify
- External Speaker for Walkie Talkie
- Extension Speaker for bus & truck,hand-free mobile communication