Description: 100% brand new and high quality Feature: Made of high-quality material, durable and waterproof. Outdoor ultrasonic bark stoppers can effectively block dog barking and do not need to receive collars. Safe and effective, suitable for all breeds and sizes of dogs. Cute mushroom umbrella shaped design, it will effectively prevent the rain. Three gears adjustable, suitable for various dogs with different breeds, shape and characters. You can adjust more effective bark stopping gear according to different dogs. Two-color indicator shows whether the battery is sufficient, easy and simple to use. This cute indoor and outdoor ultrasonic bark stopper can be hung on a tree, anywhere in the house or in your yard, it can be hung, placed on a table or elsewhere. When an ultrasonic bark alarm detects excessive barking, the microphone will sense the bark and activate parts. At this time, the product will emit a safe high-pitched ultrasonic sound, which can be heard by dogs but not by humans. The dog will stop barking when stimulated by sound. Because ultrasound can make a dog uncomfortable, the dog stops barking. Specifications: Item Type: Dog Bark Stopper Material: ABS Plastic Size: 16x13.5x9.3cm/6.2x5.3x3.6in Color: White+Brown Quantity: 1 Set Instructions: When the test position T is adjusted, the indicator light will light up and the green light will always flash. When there is a barking sound, it will light red and emit a "DDD" sound. It is used to verify the function of the microphone and speaker. When it is adjusted to 1, 2, and 3, the indicator light will flash green and flash at intervals. When there is a barking sound, it will flash red (with a slight "slight" sound). The dog will be exposed to ultrasound and they may feel irritated and uncomfortable, then stop barking (except for hearing-impaired dogs). Some dogs may be barked more and more fiercely when they are first stimulated by ultrasound. Normally, they will slowly adapt in about a week. It is a normal phenomenon. Note: No retail package. Transition: 1cm=10mm=0.39inch Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package Includes: 1 Set x Dog Bark Stopper