The product equipped with advanced ultrasonic sound technology enhances the effect of driving away dogs at longer distances, so you don't need to worry about you and your pets being attacked by a dog. Features: \u3010Wide Application\u3011This dog repeller will help you drive away from the dog when you encounter a dog trying to attack your dog. What's more, the product equipped with advanced ultrasonic sound technology, which can be heard by dogs, so it can be used as a dog training device to help you train your dog. Moreover, this product also has the function of illumination with high brightness flashlight. \u30103 Modes Flashlight\u3011The product has a strong flashlight, which can achieve three modes of constant light, strobe light, and SOS, suitable for you when walking your dog outside at night. What's more, the flashlight has a smart light sensor, which can adjust its brightness automatically according to the environment. \u3010Non-slip Grooves \u0026 Portable\u3011The back of the dog repeller is designed with non-slip grooves, which can be better held in the hand. Also, it is a portable dog repeller that you can use both indoors and outdoors. \u3010LED Indicator\u3011This dog repeller is equipped with a LED indicator, so you don't have to worry that the dog repeller will suddenly run out of power. \u3010Chargeable \u0026 Long-lasting Life\u3011The 1200mAh battery has the power saving function, which can be extended to 140 days on standby. Therefore, the product can be used for up to 20 days after a quick charging of about 2 hours. Specification: Product Name: Dog Repeller Color: Black Main Material: Plastic Battery: 3.7V 1200mah Li-Po Battery Charging Time: 1-2 hours Work Time: 15-20 days Control Distance: 10M Size: 14*3.5*3.5cm Weight: 105g Package Information: Package Size: 17.6*4.6*4.6cm Package Weight: 135g Package List: 1*Ultrasonic Dog Repeller 1*Lanyard 1*USB Cable 1*Manual