Provides easier operation underwater by locking the keys and preventing them to be pressed by water pressure while deep diving. After 5 minutes of inactivity, the device emits an audible alarm and LED starts flashing. The replaceable pointer coil comes with a hard-shell protection case to prevent wear of the detection tip. 2 - Replaceable Scuba Coil & Hard-Shell Case. 5 - Battery Compartment Cover For Land Use.6 - USB Charging Cable. This item is in the category "Business & Industrial\Test, Measurement & Inspection\Test Meters & Detectors\Metal Detectors". The seller is "serious_detecting" and is located in this country: US. This item can be shipped to United States.