This Big Mouth Male masturbator is not just a cool masturbator but also a powerful penis trainer. It can offer you deep throat simulation training. and 9 vacuum tapping modes can stimulate your glans very well. In addition. it is app controlled. there are 4 playing methods you can choose. very interesting and fun. and you can also DIY your frequency. LCD display. USB charging. and portable size—you deserve this toy. It will offer you a better experience.