The number on screen reflects a composite conductivity read

not a spec sheet

All screens are clearly marked

Developed after extensive field testing with professional prospectors

Concentric configuration delivers precise target pinpointing and cleaner ground balance in hot soil

DetectorPro Black Widow Metal Detector Headphones with 1/4" Angle Plug gold prospecting headphones The number on screen reflectsThe DetectorPro Black Widow headphones are heavy duty over ear headphones designed for professional detectorists with special hearing requirements or those hunting in high noise environments like urban traffic zones and surf heavy beaches. Dual independent volume controls accommodate unequal hearing ability in each ear, while extended muffs block ambient noise up to 29 decibels. A dual mini toggle switching system provides detector compatibility and