METAL DETECTOR IDX-PRO - KIT - All you need to build powerful detector.
The Detector works on 6.5kHz frequency and has potentiometers for:
- Manual ground balance (GB)
- Discrimination
-Threshold 
- Sensitivity
and Push Button for Pinpoint
Comes with schematic and parts sheet + the speaker who is not in the picture

Coil data - TX-0.580mH with wire 0.50 - 0.70mm, RX-35mH with wire 0.20-0.25mm. 

If you want to see how is work and how to build it you can check out my Youtube channel for more info - @HoBByTV_The_King_Detectors
 
Notice: The color of PCB may be different but el. schematic is the same. 
Notes: Some parts may be different depending on what is available in the store but will be the same value.
Тhanks for understanding!

Good luck with the projects colleagues!