Operating Search Frequency: 2.4kHz quartz crystal controlled Searchcoil: solid 8-in MegaDEPTH heavy-duty negative buoyancy coil, co-planar, RF shielded Headphone Transducers: permanently encapsulated high-output piezoelectric Audio Frequency: 400 Hz Headphone Earcups: heavy-duty polymer full ear surround; extra comfortable soft cushions, ambient noise blocking up to 24 decibels, heavy-duty ear-to-ear wiring with new seals for added strength [...]
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