Welcome to the store! 1、Applicable for: This training set can be used as a mouth muscle trainer or toothbrush, suitable for children over 3 years old. 2、Replacement head: Includes a round massage head, hair-free flat head, and a toothbrush head; can be installed according to actual needs. 3、Head functions: Helps massage oral acupoints, strengthen mouth muscle training, and improve tongue flexibility and stability. 4、Simple operation: The electric tongue trainer features one-button control and is comfortable to use, ideal for people with dysphagia or lisp. 5、Glossy appearance: Made of excellent plastic with a shiny look; does not damage the mouth or tongue. Product Type: Tongue Muscle Trainer Battery: 1 x AAA battery (battery not included) Material: ABS Applicable for: Children and adults over 3 years old Usage: Massage oral acupoints, saliva glands, unclear mouth, swallowing disorders 1 x flat head 1 x Muscle Trainer 1 x brush head Your 100% satisfaction is our top priority. We will provide you with the best service. If you find any issues after receiving the product, such as damage or incorrect quantity, please contact us immediately for the best solution!