• SMALL BUT POWERFUL: 3.1" x 1.7"x 2.1". Made of ABS material, waterproof & durable.
• 100% SAFE & HUMANE: No electric shock, no liquid propellant is used. Is the safest, most humane and used widely way to keep your own dog or your neighbors dog from barking.
• HIGH PERFORMING SOLUTION: Stops a dog from barking by emitting a harmless high-pitched ultrasonic sound which can be heard by dogs as far as 50 feet away but is completely silent to human ears.
• EASY TO INSTALL: Like an alarm clock, small and easy to place and hide, Two LED battery status indicator, four adjustable ultrasonic volume levels-test low range, medium range, and high range.
• FOR ANY DOG SIZE: Humane method of bark control, suitable for most breeds and sizes of dogs, If the dog is deaf or hearing impaired,he may not react to the device.

How The Outdoor Bark Control Works: