Feature: 1. Three heads: round head massage head, hairless massage head, toothbrush head. 2. Can be changed according to actual needs; can be used as a mouth muscle trainer or as a toothbrush, easy to use. 3. Massages oral points, strengthens oral muscles, and trains the flexibility and stability of the tongue. 4. Helps prevent drooling, speech impediments, and swallowing difficulties; powered by 1 AAA battery (not included). 5. Compact and lightweight, one-button operation, convenient and easy to use. Specification: Condition: 100% New Item Type: Tongue Muscle Trainer Material: ABS Battery: 1 AAA battery (not included) Usage: Unscrew the lower part to the right, insert 1 AAA battery, close the cover, press the switch, or change the head for different functions. Scope of Use: Massages oral pressure points, helps with drooling, unclear speech, and swallowing difficulties. Suitable for children and adults over 3 years old. The electric massager is designed for oral sensory massage and rehabilitation. Vibrates and massages around the mouth to strengthen muscles. Note: This product should not be cleaned at high temperatures. Use ultraviolet light, ozone, or toy cleaning solution and other non-high-temperature cleaning agents. Package List: 1 x Massage Rod 1 x Hairless Brush Head 1 x Toothbrush Head 1 x Round Massage Head