Recording Sound Button: This button can record your own voice and what you want to say, leave messages. It can be recorded and played repeatedly. If you are not satisfied, you can repeat the recording.Portable Compact Design: Recording time is half minute recording time; small size, easy to carry and use.Learning Educational Toys: It can be used as a parent child interactive toy, a children's language education toy, or as a phonograph between family, company and friends.Fun Gifts: recordable dog buttons are not only suitable for pet training, but also can be applied for entertainment interactions, desktop gadgets, messages and more.Gift: Also a great funny gift for your friends. Size Chart: 8.8cmx4.2cm/3.46inchx1.65inch Package Includes: 1 Recordable Sound Button Note: Please allow slightly errors 1-2cm differences due to manual measurement.