1. Complied with environmental criteria. 2. Chases moles, burrowing rodents and snakes. 3. Dimensions: dia 58mm. 4. Solar panels: polycrystal silicon 2V/45mA. 5. Rechargeable battery: Ni-Mh 1.2V/300mAh. 7. Frequency: 400-1000Hz. 8. Working range: About 800 square meters. 9. Power supply: solar energy cell, long-effective Ni-Mh cell recharged by solar energy. 10. Waterproof Level: IP44.