While only 10% of become immune to our already advanced 25kHZ dog barking we refuse to stop short of 100% effectiveness, so we added an undulating 20 to 30 kHZ 10 second ultrasonic boom. 100% painless. 100% effective. For 300% faster dog training than a dog whistle to stop barking, dog clicker for training, bark box, bark collar, air horn for or in person dog training program. Makes Training Stick. 2.7x More Effective than the most expensive, effective dog behavior training on the market with a 3 Tiered Procession that puts you in full control; 4x Chase-Stopping Sounds, 2x Bark Eliminating Sonic Waves, 1x PoliceBright Ultra-Deterrent Light & even a flashlight to enjoy those late evening strolls. Stops Behavior in Seconds - 50 Feet Range - Skeptical? Watch the videos in the ABQP anti barking device section and see for yourself just how quickly, effectively and painlessly this dog deterrent transforms every annoying, destructive and unsafe behavior in under 3 seconds. The perfect for any dog age 6 months to 8 years who barks, chews, bites, chases, jumps up, digs, or eats dangerous objects. Rapid 4 Hour Charge, up to 3 Month of Use. More than the fastest, safest dog training in the world - with 0% pain or damage to pets or people - this is the dog barking deterrent to get if you want to skip the hassle of keeping yet another 'thing' plugged in because it charges in 1 hour, with a full 60-90 days of charge when connected for four. Colour:Orange Material:Plastic Package Contents: 1 * Dog driver 1 * Charging cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.