Mode：GT658G

1. Battery :2 X 9V

2. Working voltage: 18V

3. Frequency :6.2KHz

4. Alarm mode :LCD and sound mode

5. Five detection mode （ALL-METAL,DISC ,NOTCH,SENS, PP ）

6. LCD screen with backlight: it can be used in dark places

7. Three-tone audio recognition: for different types of metal，There are three different tones (high, medium and low).

 8: search coil size：Waterproof 25x25cm 

Inner box：45x26.5x10cm

Carton size：10pcs/carton，54x52.5x47cm