JW Fishers Proton 4 Underwater Magnetometer Include::300 ft. Cable The F75 includes a detailed

The F75 includes a detailed operating manual

the Garrett Pro Pointer 2 will cut your digging time in half

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

It is also compatible with other brands

7-inch concentric search coil

JW Fishers Proton 4 Underwater Magnetometer Include::300 ft. Cable The F75 includes a detailedJW 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