Material: Plastic. Packaging size: 13*8*4CM(5.12*3.15*1.57in). Single net weight: 108g. Power supply: Type-C. Battery capacity: 800 mah. Working hours: ≥ 90 days. Charging time: 0.5 hours. Rated frequency: 15-40KHZ. Rated power: < 3W. Rated power supply: DC5V. This ultrasonic dog trainer is a professional equipment for dog training and barking control. It emits 15KHz-40KHz safe frequency sound waves that attract the attention of dogs and prevent unwanted behaviors such as barking, digging, scratching, biting, and climbing on furniture. The device has a sound wave transmission distance of up to 32 feet and is compact enough to fit in your pocket or bag. It is rechargeable and can be fully charged in 0.5 hours, with a long battery life of 90 days. The device has two sonic modes and an LED burst light for added functionality.