Feature: 1. Powerful Bark Deterrent: The 25KHZ ultrasound emitted by this device provides a strong and effective stimulation for dogs' hearing, effectively driving away and suppressing their barking. 2. Enhanced Dog Repellent: With the addition of an infrared flash, this device strengthens its ability to deter dogs from a longer distance. The light helps dogs clearly identify the source and location of the sound, making it clear that this device is directed towards them. 3. Durable Construction: Made with premium ABS material, this device is durable and resistant to wear. Its working range is up to 80 meters, making it practical and reliable. 4. Easy to Use Handheld Design: With a one button switch, this device is easy to operate and convenient to use. Its compact and portable design allows for easy carrying. 5. Versatile Outdoor Solution: Suitable for outdoor activities, yards, and camping, this device not only serves as a self defense tool but also helps in training your pets and suppressing their barking. Specification: Item Type: Dog Bark Deterrent Device Material: ABS Weight: Approx. 110.00g/3.88oz Ultrasound Frequency: 25KHZ Effective Range: Up to 80 meters Operating Current: ≤100ma Product Size: Approx. 12.2x11.5x4.3cm/4.8x4.53x1.69in Battery: 9V battery x1 (battery not included) Suitable for: Yard, outdoor, camping. Package List: 1 x Dog Bark Deterrent Device1 x Instruction Manual Note: Do not aim at the eyes of a person.