XP Blanking plug for XP headphone socket details:
Blanking Plug for XP Metal Detectors
The XP Blanking plug is designed to be inserted into the headpone socket of your XP metal detector when using the XP cordless headphones. When the plug is in use it will eliminate the sound from the speakers and enable the user to concentrate on using the cordless headphones.
Additional Information •• XP Blanking plug for XP headphone socket
it's a pence item and price should be dropped as such.