Model：GT740H

1. Operating frequency: 5.5~5.8KHz

 2.four operating principles             

 3. Sensitivity: ≥18cm(25 cents, in air); 

 4.PP: ≥22cm(25 cents, air);              

5. Alarm indicator: a. LCD indicator     b. Sound indication 

6.DISC identification range is adjustable.                                    

7. Adjustable sensitivity                   

8. Power supply: 2 x9V batteries.      

9. Working current: static ≤23mA; Dynamic ≤50mA.

10:search coil size： Waterproof 25x25cm

Inner box：45x26.5x10cm

outside carton box： 10pcs/carton，54x52.5x47cm