AMAZINGLY EFFECTIVE: Used properly, your high-tech collar quickly tames your dog's annoying barking. Within days the problem should disappear, even if your pet is no longer wearing the collar. SAFE, GENTLE & HUMANE: When your dog barks 2-3 times in a row, beeps impart a low-key warning. Then, if your pooch keeps on barking, mild static stimulation provides a pain-free correction. 7 SENSITIVITY LEVELS: With just 2 simple plus-&-minus buttons, you can fine-tune your collar's bark-detection response to suit both you & your dog. Adjustable for dogs from 18 to 120 lbs. FREE GIFTS FOR ADDED VALUE Your Donidin No-Bark Collar comes with 1 complimentary collapsible bowl, a sturdy extra leash, extra battery & a dog-training eBook. Also includes an easy-to-use product tester. 4 MONTHS GUARANTEE: We have so much confidence in our anti-bark collar that we use it with our own dogs. We're sure you'll love it, too, but if you don't, we'll refund your full purchase price.