*With super high sensitivity, it can detect extremely tiny metal articles.
*The adjusting button can eliminate interference.
*The auto-testing will begin when it is turned on.
*It needn't adjustment. With a large scan area it can rapidly and accurately complete the detection.

Operation instruction:

Working frequency: 95 KHZ
Size: 42 cmX4.13 cmX8.3 cm
Weight: 0.5 KG
Adjusting mode: Automatic
Battery: a 9 V battery (can afford 80 hours of normal
operation)
Indicator: The sound gradually rises.