�️【Automatic Citronella Dog Bark Collar】The citronella dog bark collar intelligently stops dog barking and automatically sprays to stop barking, and external sound does not interfere with the product.(NOTE: The product does not include citronella spray） �️【Harmless and Humane Training Aid】The citronella bark collar uses safe and harmless citronella spray to stop excessive dog barking and correct misbehavior. By using harmless citronella bark collars, stop dog barking effectively, safely and humanely without physically harming your dog. �️【Adjustable Sensitivity and Spray Volume】The collar Anti-bark dog collar works on different sizes of dogs at different frequencies. Depending on the barking of large/medium/small dogs are at different frequencies, the spray volume of the anti-bark device can be adjusted large or small, and the receiving sensitivity can be adjusted high or low. �️【USB Rechargeable and Waterproof】The anti bark dog spray collar has a built-in rechargeable lithium battery