Fisher CZ-21 Waterproof Metal Detector Garrett Security You still have a volume

You still have a volume control and a compatibility switch to enable the headphone to work with various detectors

Designed specifically for use with Standard 30" wide versions of the PD 6500i model

Powerful Inductive Transmitter

Coil Interference Blocking: Yes

Fisher CZ-21 Waterproof Metal Detector Garrett Security You still have a volumeFisher CZ 21 Waterproof Metal Detector + Bonus Pack Go anywhere, do anything, with the all weather target ID machine that's leak proof to 250 feet deep, the Fisher CZ 21 Quicksilver metal detector. Its patented electronics make it deep seeking while it ignores the destabilizing effects of salt water, plus, it offers three tones to identify varying types of metal with faint target audio boost. Fisher CZ 21 Metal Detector Controls POWER ON OFF VOLUME: