Unopened. About this item FOR EVEN THE SMALLEST BARKERS: The adjustable bark collar for small dogs fits breeds with neck size between 6 and 20”. Ideal as a stop barking collar for small dogs like chihuahuas 100% HUMANE & SAFE: No electric shocks or spiky prongs. Elecane’s no bark collar for small dogs uses safe vibrations. Reinforce good behavior and corrects bad doggy barking habits NO FALSE TRIGGERS: While other small dog bark collars are triggered by other dogs, our new 2020 chip prevents it. Your small bark collar for dogs triggers from throat vibrations RECHARGEABLE – No worries about replacing the batteries. This anti bark collar for small dogs can be charged using USB within 1-1.5 hours & holds a charge for up to 14 days WEATHER-RESISTANCE DESIGN – no bark collar for small dogs is resistant to rain, snow and mud splashes. You can walk with your pet in any weather Check my other offers 😊