Sonic wave sound and vibration technology creates annoying sound that repels moles. Drives moles away from gardens, flower beds, lawns and seed beds naturally without causing them harm. Spike base can be easily and firmly sunk into the ground. 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.