Ultrasonic Dog Trainer Device | Handheld Pet Training Tool with Night Light & Type-C Charging 3.7VEffectively train and control your dog? s behavior with this Ultrasonic Dog Trainer Device. Featuring three enhanced ultrasonic transmitters, this device is designed to emit a harmless, high pitched sound that only dogs can hear, helping to curb unwanted behaviors like barking and jumping without any physical contact. Equipped with a night lighting feature and convenient Type C charging, this compact trainer is perfect for both indoor and outdoor use.