Features: Under hood animal repellent, safety and eco-friendly, effectively protects your car engine cables and make driving safer. Adopt frequency conversion ultrasonics, work with flashing lights and alarm sound, which can interfere with rodents" hearing and visual systems, causing them to flee in discomfort. Support 2 power supplying methods, 3 * AA battery(not included) and car battery, you can choose according to your needs, it is convenient and practical. Made of high-quality retardant material, it is effective in high temperature resistance, with nice durability, and protects the vehicle, so you can use it with confidence. It can be connected to 12-24V car battery, suitable for car, truck, SUV, etc. It can automatically recognize engine starts and stop, saving energy. Without harmful chemicals, it can be used not only in vehicle, but also in warehouse, kitche, garages, granaries, attics, offices, etc. Specifications: Color: Black Material: ABS Transmit Frequency: 9-65kHz Power: 3 * AA battery(Not Included) / 12-24V vehicle power Item Size: 120 * 79 * 33mm/ 4.7 * 3.1 * 1.3in Item Weight: 163g/ 5.7oz Package Size: 117 * 128 * 38mm/ 4.6 * 5.0 * 1.5in Package Weight: 230g/ 8.1oz Packing List: 1 * Mice Repeller 1 * USB Charging Cable 1 * Car Power Cable 4 * Cable Ties