Features: 1Three heads, round head massage head, hairless massage head, toothbrush head. 2Can be changed according to the actual needs, can be used as a mouth muscle trainer, can also be changed as a toothbrush, easy to use. 3Massage the oral points, strengthen the strength of the oral muscles, training the flexibility and stability of the tongue. 4Prevent the mouth salivation, lisped, swallowing obstruction, powered by 1pc AAA battery (not included). 5Compact and light, single key operation, easy and convenient to use and operate. Condition: 100% New Item Type: Tongue Muscle Training Material: ABS Battery: 1pc AAA battery (not included) Usage: Unscrew the lower body to the right, load 1pc AAA battery, put the cover on, press the switch, or change the head for different functions Scope of Use: Massage oral cavity points, mouth salivation, oral teeth unclear, swallow obstruction swallow Children and adults over 3 years of age Electric massaging machine is used for oral perception massage rehabilitation. Vibrate and massage around your mouth to strengthen your muscles Note: this product can not be used for high temperature cleaning, use ultraviolet ozone or toy cleaning water and other non-high-temperature cleaning agent. Package included: 1 x Massage Rod&nbsp 1 x Hairless Brush Head&nbsp 1 x Toothbrush Head&nbsp 1 x Round Massage Head&nbsp