The SportDOG® Brand NoBark SBC- 8 is our easiest-to-use bark collar with its simple but effective design. Simply turn the collar on and place it on your dog. With eight levels of Progressive Correction and our Silent Partner™ bark-detection technology, the SBC-8 will begin training immediately, only delivering consistent, reliable correction. The Progressive Correction starts at the lowest level of static stimulation and increases each time your dog barks within 30 seconds. After 30 seconds of quiet, the collar will reset back to the lowest level. Also built with DryTek® technology, this collar is waterproof and submersible to 25 ft., making it a premium system at a value price. More Info The NoBark SBC-8 uses our Silent Partner™ technology to detect your dog’s unique barking style and delivers a correction only then. By filtering out any external noise, including another dog's bark, your dog receives the most consistent training possible. With Progressive Correction, the correction starts at the lowest level and increases to the next level each time your dog barks within 30 seconds of the previous bark. If your dog doesn't bark again within 30 seconds, the correction will reset to the lowest level.