Features: It is made of abs, fine workmanship, thick and durable, full colors, wear-resistant, and anti-shedding. The pressing sound is clear and simple, and the operation is simple . Put the buzzer in the center of the home. Make sure your dog can easily access them and you can see them understand how they use them. Reward your pet. When your dog start interacting with your buzzers, make sure you praise them. This encourages this behavior. Provides a lot of very creatively communication and interaction. Also makes creatively birthday/holiday gift to make unforgettable memory! Specifications: Material: ABS Single Size: Approx. 31.8x31cm/ 12.51x12.20in Type: 1, 2, 3, 4 Note: 1: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2: Due to the different between different monitors, the picture may not reflect the actual color of the item. Package includes: 3pcs/6pcs/9pcs Pet Communication Button