• 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 that 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.
• Product Size: 3.03" x 1.65" x 2.48"
  Package Size: 3.22" x 2.04" x 2.63"
  Weight: 3.52 Ounces

How The Outdoor Bark Control Works: