Pet communicator dog trainer pet toy button sounding toy About this item Interaction: the best tool to interact with . Using these engravable dog buttons, you can let your dog interact, and can even express ideas through buttons. This is very interesting. Recording: The record button can record up to 30 seconds. If you want to train your dog to communicate with you, you can record words, such as "go out to play", "eat meat", "eat snacks", "daddy", "mother" " or other words you want to express. Learning: If you want to learn specific training , you can buy books for reference or learn training through videos shared by other people on the Internet. Through repeated learning and training, there will be more fun between you and your dog. What is more interesting is that the dogs can also interact with each other through the record button. Easy to useEach button requires two AAA batteries (not included). Button diameter is 2.4 inches, base diameter is 3.1 inches. Turn on the switch, then press (and hold) to record, speak, then release to stop recording. Durable: These dog communication buttons are made of durable plastic, safe and reliable. Please install a new battery the first time you use it. If you can't record during use, it may be due to insufficient battery power and you need to replace it with a new battery in time. size8x8x3.5cm Including: 1x vocal toys