Technical parameters:
1. Product weight: 3.7 KG
2. The product size: 30 x30x117mm
3. The maximum detection depth: 2.5 m
4. The main vibration frequency: 465HZ±2HZ
5. Signal frequency: 454HZ±2HZ
6. Working electric current: 9V "AA" (alkaline) * 6
7. Power consumption: 0.6W
8. Accessories: a copy of instruction book, and 9V"AA" 6 (alkaline) batteries*6, a pair of earphone.