O.K.Thanks for the permission.
Here,it is one of the latest model of AKA brand and it is called Sorex 7281.This is multifriquency detector.To have an imagination about abilities of this detector and about a depth on air,I mention this video here.The length in this video is being measured in cm.There are 4 coins in tests-a small silver approx.8 mm,a cooper one of 25 mm,a bimetal coin of the same diameter and the large one approx.6 cm. 2 coils are used in these tests.The first one is 15" DD and 3 kHz and the second is stock coil 10"DD ( 7 kHz).You can see,that generally,all ferrum targets are defined at the left side of the display and the hodograph goes to the left on different levels,depending of a size of a target and an age of it and all other metals at the right side and their hodographs go to the right and on different level,depending of a metal.Also,you can see VDI identification as an usual one.And polyphonya in sounds ( up to 91 tones) and it can be set also 10 tones-3 tones ...due to your choice.
This is very light detector-approx.1 kg and it works on 1 rechargable battery of 3.7 Volts.Also,it can be more usual version of 4 AA batteries.There are a lot of additional functions in all of AKA detectors.
Mainly,detectors are produced with Russian menu,but due to a user choice,it can be with English menu.
My opinion,that AKA detectors are ones from the deepest VLF detectors in the world,probably,the most deep among all and AKA identification is patented and very original,not similar to any other detectors.
If you have questions,I will answer with pleasure.
Яндек�.Видео