Thunderbolt no.2 to dip jewels adopts the latest electronic technology, internal balance line, its balance model can than all "mineralization response" to probe impact, and identify patterns can be detected distinguish non-ferrous metals or black metal, greatly improving the effective detection and depth of accuracy, have deep detecting depth, accurate positioning, the resolution is strong, easy to operate features. In order to maximize use this product all function, in before use, please read this manual.
This product besides military applications outside, also applies to the following several areas:
(1) criminal department fast degrees searches
(2) testing raw materials, fuel and food of metal sundry
(3) to examine mail, the metal syst items
(4) underground pipes, cables, check
(5) archaeological and prospecting
(6) found hidden buried gold and silver treasures and metal mineral waste metal takeover

Product characteristics:
(1) metal detection and identification of metal function conversion
(2) underground metal and metal mineral exploration
(3) non-ferrous metal with black metal identification
(4) automatic adjustment function
(5) manual adjustment eliminate mineralization reaction
(6) speaker voice reminder
(7) battery low electricity hints
(8) leds luminous function
(9) induction coils disconnection automatic alarm (when connecting cable loosen when automatic alarm)

The product specification:
(1) the maximum detection depth: 1.5 meters
(2) detection means: to balance detection/recognition detection
(3) : main vibration frequency 4.19 MHz
(4) signal frequency: 7.2 KHz
(5) power: Rechargeable Battery