Ultrasonic Dog Repeller Anti Bark Device Stop Barking Humane Pet Training ToolFeatures:Handheld Ultrasonic Dog TrainerA professional tool for training and bark control, emitting safe soundwaves (25-40KHz) to attract dogs' attention and prevent unwanted behaviors. Adjustable sound waves repelaggressive dogs, making cruel shock collars unnecessary.Portable & Effective RangeCompact size for easy portability, one button operation can drive dogswith a 30-foot range for effective bark prevention.Long Battery Life800mah Rechargeable Li-ion battery offers up to 60 days of use per charge,ideal for travel and outdoor activities.Unique Dual Frequency ModesLow/high-frequency modes for training and immediatebehavior correction.LED Lighting DesignTwo high brightness LED lights, one click to turn on spotlight lighting,walking in the dark, safe and worry free!Working Principle: The ultrasonic dog repeller emits 25KHz waves (audible to dogs 15Hz-50KHz),which don't harm but deter barking and aggressive dogs.Target Audience: Effective for large, fierce,and domestic dogs over 6 months. Less effective for puppies 8 years, or petsdue to reduced hearing sensitivity.Applicable Distance: Max 30 ft, best at 18 ft. with no obstacles, as ultrasonic waves can't bypass barriers.Applicable Environment: Works best in quiet settings. Noise from cars, busy streets, or loud speakers can interfere.Safe & Humane: An alternative to shock collars, using ultrasonic technology for gentle, non-harmful correction.Usage: Aim at the dog, press, and hold the ultrasonic button. Switch gears if needed.Specification:Color: OrangePower Source: Battery PoweredController Type Button ControlMaterial: PlasticInput Voltage/Current : 5V/2A(DC)Working sound wave: 25KHz-40KHzProduct Dimensions: 4.3*1.2*1.2inchesRecommended Uses For Product: Dog training, stopping barking, chasing away vicious dogsPackage Includes:1 x Ultrasonic Dog Repeller1 x User Manual1 x USB-C Cable