Note: This product cannot be cleaned at high temperature. It can only be cleaned by non?high temperature methods such as ultraviolet rays, ozone, ethanol, etc.! specification: Condition:100% Brand New _x000D_Item Type: Tongue Muscle Recovery Device_x000D_Material: ABS Plastic_x000D_Battery Type: 1 x AAA battery (not included)_x000D_How to use: Unscrew the lower section of the body to the right, insert a AAA battery, put on the cover, press the switch, or change the head, and use different functions_x000D_Use range:_x000D_Massage oral acupuncture points, salivation in the mouth, slurred teeth, and swallowing disorders_x000D_Children and adults over three years old_x000D_The electric massager is used for oral perception massage rehabilitation, massage around the oral cavity, strengthen muscle strength Features: 1Three head replacements, round head massage head, hairless massage head, and toothbrush head can be replaced according to actual needs. 2It can be used as an oral muscle training device or a toothbrush, which is convenient to use. 3Massage acupoints in the mouth, strengthen the strength of the oral muscles, train the flexibility and stability of the tongue, and prevent salivation in the mouth, slurred teeth, and dysphagia. 4This product is small and light, with one?button operation, easy to use. 5For oral perception massage rehabilitation, massage around the oral cavity to strengthen muscle strength. PackageList: 1 x Oral Massage Stick 1 x Hairless Brush Head 1 x Toothbrush Head 1 x Round Massage Head