This 8 ohm, 5 watt extension speaker has a black case with a durable expanded mesh grille.

It measures 73x65x30mm, has a 1m lead (+/- 5cm) with a 6.5 ml gold-plated  stereo plug. 

It is suitable to use with the GPX 4500 or 5000 straight from the battery and with enhancers attached to batteries for the 

SD-Series, GP-Series and GPX 4000 detectors.

It has a sturdy metal clip on the back for attachment to the harness.