Anyone got an experience on this Device

[Lahoop]

Hi to all
There are many long rang locators devices but caught my attention three devices
1-Germany plus 2
https://www.youtube.com/channel/UCLshMEiBSHoPaEvVoEw2zlg
2- Aks
https://www.goldaks.com/shop/
3- TFR 4
https://www.tfr-rods.com/
Please anyone have any piece of knowledge of the efficacy of the three

 

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[signal_line]

They all are called "body response " devices. They all have a swivel handle. Most people never learn to use this type of locator. You never hear about any treasure found. The hand-held, frequency driven locators do not work that good in the first place. You need to set it down on the ground and wait five minutes then circle the device with an L-rod to find the line. Best to try before you buy.