Sonic wave sound and vibration technology repels moles by simulating predators. Battery recharges via solar energy for a long-lasting and effective solution. Coverage 650m2. Solar panel: 2V 55mA. Power: 0.09W. Frequency: 400Hz+/- 100Hz. Rechargeable 1.2V AAA 80mA Ni-MH battery included. Sonic wave sound and vibration technology repels moles by simulating predators. Battery recharges via solar energy for a long-lasting and effective solution. Coverage 650m2. Solar panel: 2V 55mA. Power: 0.09W. Frequency: 400Hz+/- 100Hz. Rechargeable 1.2V AAA 80mA Ni-MH battery included.