Soeks F4 Ecovisor 4-in-1 Dosimeter, Food Nitrate, Water Quality TDS Tester, Electromagnetic Fields Detector (EMF). EN version: English Menu & User Manual.

It’s made from very bad quality material, brake very easily, battery last 5min

You can cut your hands when opening to replace batteries. Broken the screen when closing as you have to press firmly. Will never recommend!! Pure waste of 200euro