Feature: THREE HEADS: Round head massage head, hairless massage head, toothbrush head. MULTIFUNCTION: Can be used as a mouth muscle trainer, can also be changed as a toothbrush. FEATURES: Massage the oral points, strengthen the strength of the oral muscles. BATTERY: Powered by 1pc AAA battery (not included). APPLICABLE OBJECTS: Children and adults over 3 years of age Specification: Condition: 100% Brand 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 List: 1 x Massage Rod  1 x Hairless Brush Head  1 x Toothbrush Head  1 x Round Massage Head