Rechargeable & waterproof: The bark collar for medium dogs new USB rechargeable, simple operation and more stable charging, full charge in 2 hours works for up to 10 days. Bark collar for large dog waterproof design, you can enjoy training time with your dog in the pool, park, beach, backyard. Anti Bark Collar for Small Medium Large Dogs: This small dog bark collar strap is made of skin-friendly and comfortable soft material adjustable neck sizes 9 - 22 inches for tiny, medium, or large dogs, and the design of a reflective nylon automatic bark collar is perfect for walking with your dog when it gets dark. Safety Anti-Bark Collar with 7 Intensity Levels:this dog vibration collar adapts to 7 sensitivity levels for different possible barking volumes and for various environments, You can easily adjust the sensitivity of the no barking device for dogs to vibrate when your dog produces a high level of sound to train them. No shock, No Harm:This dog bark collar designed with 2 training modes, beep and vibration, will not cause harm to your dog. When a bark is detected, it will beep or beep and vibrate. The anti-bark collar will continue to work to the next correction level until the dog stops barking. Intelligent Anti Dog Barking Device: Bark collar for dogs with an advanced smart bark recognition chip and a comprehensive upgrade of the program that recognizes the dog bark.The combination of these two technologies can filter out other barking, preventing false triggering and protecting your dog from unnecessary punishment.