Vibra-Tector 740
An underwater search device with a 10 cm round monocoil, a light signal and vibration emitted when a target is detected. Pinpoint is made with PI technology, which provides stable and efficient search in fresh and salt water, grass, mud, sand including salt and other environments in one mode - "All metals".
The maximum diving depth is 30 meters. The detector has high protection against interference, so neither shocks nor salty ground will affect the quality of its work. The indicator of activation is the LED located on the reel. The metal detector is powered by 9V batteries of the "Krona" type, one of which is enough for 90 hours of continuous searches.
The body consists of stainless steel, for greater tightness there are no regulators or buttons on its surface, and a lanyard (fall insurance) is attached to the handle to fix the device to the hand. Of the disadvantages, users highlight the shallow depth of detection under water: he sees large coins and rings at a distance of up to 12 cm, and he does not see small gold earrings and chains at all.
Sea Hunter Mark II
Metal detector for underwater search, built with PI technology. At the bottom of the sea, the device detects large objects, as well as small jewelry (22 frequencies in the range of 7.5 kHz are provided for this). It is equipped with a 20.3 cm monocoil, which gives a large detection depth (the operator can dive up to 65 meters, and the search itself is within a radius of up to 0.7 meters).
A control panel without a display and with a maximum threshold setting, through which you can connect headphones (scuba, they are included) and power, as well as select modes: "Standard Trash Elimination" or "Discrete Trash Elimination".
The battery is powered by eight AA batteries, which are enough for 40 hours of continuous operation. According to users, the controls are easy to manipulate, but there is a complete dependence on the sound signal, that is, you will have to swim constantly in headphones, the design is bulky.
Makro Kruzer
A device for searching for objects in the ground (wet salt sand) and under water at a depth of up to five meters. It is made using VLF technology and is equipped with an ellipse DD coil measuring 28 x 18 cm. The device detects coins, ancient artifacts, gold, jewelry and relics at a frequency of 14 kHz.
The classic S-shaped boom is made of plastic, the control unit and battery compartment are located in a removable candy bar fixed on top. For a comfortable search, an armrest is provided. Wireless headphones with a frequency of 2.4 GHz are included.
Ground balancing can be adjusted automatically or manually. When a product is detected, the value of the material conductivity index is displayed on the display screen. The metal detector is complemented by Pinpoint mode and vibration mode. The model runs on a 3,700 mAh lithium-ion battery for up to 19 hours. According to users, the rod and the coil are not connected strongly, which causes a backlash. A metal detector is more suitable for beginners than professionals.
