Volume control-Adjust the output volume of speakers or headphones.
Waterproof search coil-You can use metal detectors in shallow water.
Specification:
Colour: Black
Material: ABS plastic + aluminum
Sensitivity: the lowest. 130 mm / 5.12 inches (test coin: US 25)
Detection objects: metals (iron nails, iron sheets, aluminum rings, small aluminum products, coins, gold, copper, silver)
Detection method: all metal, identification
Working frequency: 5KHZ
Power supply: 2 x 6F22 9V batteries (not included)
Operating voltage range: 9V
Detection indication: mechanical pointer mode, audio mode
Control: Power switch
Sensitivity: adjustable
Detection depth: 10-30cm / 3.94-11.81inch
Volume: adjustable
The height of the detector is adjustable: 78-107cm / 30.71-42.12inch
Application: Metal foreign body detection of materials, fuels, food, underground pipeline detection, archaeological prospecting, discovery of buried treasures of gold and silver metal cultural relics, scrap metal industry acquisition, customs and security inspections, detective searches by police departments, criminal investigations, inspections of express delivery and luggage Metal foreign body in.
Working temperature: -15~45 / 5~113
Storage temperature: -20~60 / -4~140
Item size: 107 * 27 * 16.5cm / 42.12 * 10.63 * 6.50in