JW Fishers Proton 4 Underwater Magnetometer Include::300 ft. Cable providing up to 75 hours

providing up to 75 hours of battery life

It has a bright LED light for hunting in low light uses

7-inch concentric search coil

Adjustable shaft

Intuitive Easy to Use Controls

JW Fishers Proton 4 Underwater Magnetometer Include::300 ft. Cable providing up to 75 hoursJW Fishers Proton 4 Underwater Magnetometer The PROTON 4 is a fourth generation proton magnetometer from JW Fishers. It is a top performing microprocessor driven marine magnetometer detection system. With a one gamma sensitivity, it has the maximum usable sensitivity for a towed magnetometer. A two second cycle time gives a strong return signal and is fast enough to detect even small iron steel targets. The PROTON 4 features a triaxial noise