The NoBark 6 by SportDOG Brand® is the quickest and easiest solution out there for stopping your dog’s nuisance barking. This bark control collar includes 6 levels of stimulation with no programming required. Just put the bark collar on your dog and the stimulation level will increase as your dog barks continuously and reset itself after 30 seconds of silence. The NoBark 6 also features an automatic safety shut-off eliminating the risk of overcorrection. With a waterproof collar receiver, a long-life, replaceable lithium battery and an adjustable collar for neck sizes between 6 and 28 inches, the NoBark 6 by SportDOG Brand® delivers on our promise: Gear the way you'd design it®.