WARDBES Ultraschall für Hunde, 3 einstellbare Frequenzen, Anti-Aboiement für Hunde, Ultraschallpfeife für Innen- und Außenbereiche, Anti+Bellen + Hunde, groß, mittel und klein (schwarz)

Rechargeable Barking Device? The anti-bark device for the rechargeable lithium battery built in the dog, the device can work continuously for 30 days after a full charge in 5 hours. You can charge your device to stop barking via the USB port of your laptop or power bank. ?Mini Design and Waterproof Bark Cap? The dog muffler is small. You could take it anywhere, such as hanging from a tree, wall or fence, preventing your dog or your neighbor' dog from barking. Make sure the bark control device is facing the dog within an effective range of action without obstacles. ?Warm Reminder?Our bark device may not work on all dogs. Deaf dogs will not respond to this device. Even hearing impaired dogs may not. The behavior and tolerance of each dog is unique and each responds to different levels and methods of correction differently. Please allow 2 weeks to use it to train the dog.