・It is made of optimized ABS material,thick and durable ・Require 2x AAA batteries (not included),and the sound is bright and simple,and the operation is simple ・The product is multi-functional,equipped with a recording function,which can record the owner voice or the normal voice of the pet to the pet ・Put the buzzer in the center of the house. Make sure your dog can easily access them and you can see them understand how they use them ・Reward your pet. When your dog starts interacting with your buzzer,make sure you praise them. This stimulates this behavior Specifications: ・Material:ABS ・Product size:diameter &Phi 88 x height 42mm ・Net weight of product:57g ・Input voltage:2 x AAA batteries (not included) ・Recording time:30 seconds Package included: ・1 x Voice Recording Button ・1 x English User Manual