DurableSimply press the top button of the ringer to make a sound. The material is stainless steel to ensure that the sound does not disappear during the pressing process. Very durable. [Loud Ringtone] The office bell is loud enough to be heard even in a noisy restaurant or outdoors. The bell can also help the elderly call for help [Safety] High-quality black material, odorless, safe and non-toxic, width: 85mm, height: 55mm, whether it is used indoors, outdoors or on a table, it won't happen. [EASY AND CONVENIENT] Our training bell is perfect for pet potty training. It can be used as a communication device or as a nice toy. For example, it can be fun to give your pet treats as you ring the bell for pet training or as a play aid for children. More scenes are waiting for you to discover.