Material: ABS Size: 12.5*10*4CM Packaging: bark arrester * 1 charging cable * 1 nylon reflective tape * 1 instruction manual * 1 packaging box * 1 【Smart Bark Collar & Protection Mode】This bark collar for large dog is very easy to use - just turn it on,set it up with 2 buttons simply and place it around your dog's neck.In Zap Mode, our dog bark collar has a safety shut-off function,If triggered six times consecutively, the humane anti barking collar for dogs will cease operation temporarily for one minute. This ensures your pet's safety and prevents your dog from unwarranted punishment. 【Intelligent Technology & No False Triggers】Featuring smart bark detecting technology, bark collar for medium dogs is equipped with smart sensor and chips that will detect barking more accurately and fater with no delay, while filtering out other irrelevant sounds or other dogs sounds to prevent false triggering. This automatic bark collar ensures that your dog won't receive unnecessary training.Returns, Refunds and Replacements Products received faulty, damaged, or not as described are eligible for a return, refund, or replacement in accordance with local consumer laws. We are committed to ensuring all products meet the standards of quality and reliability expected by our customers. Please note that we do not accept returns or provide refunds for change of mind. We encourage you to carefully consider your purchase to ensure it meets your needs and expectations. Delivery Timeframe：Please note that we cannot guarantee the exact date of arrival, and the delivery timeframes (excluding weekends and public holidays) are as follows: For customers in Victoria, approximately 7-10 working days; For customers in NSW, SA, ACT, and QLD, approximately 9-12 working days; For customers in WA, NT, and TAS, approximately 9-12 working days.