Product parameters Material: ABS + aluminum + polycrystalline solar panel Weight: 360g (2 packs) Product size: 23.5×10.5cm Packing size: 22.5×11.5×5.6cm Effective range: 650 square meters Frequency: 400-1000 HZ Built-in lithium battery: 1.2V / 800mAh Product Description 1, solar charging mode, simple and convenient. 2, installation is simple, can be used directly on the ground. 3. By transmitting ultrasonic vibrations to affect the sensitive hearing of subterranean rodents,