Specification:Type: DogsOrigin: Mainland ChinaItem Type: Bark DeterrentsMaterial: PlasticModel Number: Anti Barking DeviceIs Smart Device: noBattery: 9V dry cell (not included)Dimensions: 13 x 5 x 2.5cm/5.12x1.97x0.98inchNote:Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you!Please allow 1-2cm measuring deviation due to manual measurement.Package Included:1 x Anti Barking DeviceDog Bark Deterrent & Pet Behavior ModificationThis dog barking deterrent can not only control dog barking, but also help correct the behavior of your pets, preventing them from fighting, chasing, biting, digging, gnawing on furniture, eating unsafe food and other unwanted behaviors. There are three modes: chase, training and light, please adjust the buttons to choose different modes for the best results.Safe for Humans & DogsThis is the most humane and widely used method of preventing your dog or your neighbor's dog from barking. The ultrasonic waves of the stop barking device will not disturb or harm humans as they cannot hear these frequencies, but dogs can be sensitive to these ultrasonic waves. However, some dogs may be scared or don't like the sound and won't stop barking at first, so please allow 10 days for training.Super-bright LED LightingThis ultrasonic dog bark deterrent also has the illumination function of a flashlight, which produces a strong white light of 2800MCD. Not only can it be used as an aid to keep dogs out of approaching while jogging, walking or cycling, but the bright light can also be used as a flashlight to light your way home.Lightweight & Easy to UseThis dog barking silencer is compact and portable, and comes with a wrist strap that fits comfortably in your hand or pocket. With one button to turn it on and off, and another to choose whether only a flashlight is needed or a flash deterrent with ultrasound. It's simple and convenient to use and a great alternative to a dog trainer when training your dog.Suitable for All Kinds of DogsThis ultrasonic dog deterrent can repel dogs up to 82 feet effectively and can be used both indoors and outdoors. It is suitable for all kinds of dogs, cats, etc. of different breeds, sizes and ages. (Note: Batteries are not included, please prepare a 9V alkaline battery.)