I received the device rather quickly even though missing small coil. Before shipping the they told me it would be short. Wrong instruction disk and no operating manual. They quickly emailed me an operating manual. Then... After several attempts to ground balance (They call it calibration) in, now four, different levels of mineralization i still have not been successful to calibrate the unit. Ger and uig are ignoring my emails, claim i'm having email/spam problems but have now received the operating manual 4 times. Don't buy. Was this information helpful? | 
