【2 in 1 Penis Pumps & Enlargers Male Masturbators】The penis enlarger serves two purposes. You can either use it as a trainer or make it work like an automatic sucking masturbatior cup. The training mode offers 5 pressure settings to gradually train your penis to become larger, longer, stronger, and maintain an erection longer. Tip: It is recommended that beginners start with mode 1. Simply follow the instructions in the user manual and once the desired level of erection has been achieved, use the valve button to release the pressure. 【PENIS ENLARGER 】- Rhythmic negative pressure fluctuations cause the penis to expand, causing the cavernous blood vessels to dilate and blood flow to increase, allowing the penis to gradually lengthen and experience firmer, longer-lasting erections, improving your sexual performance, and also allowing you to have erection difficulties users can improve their psychological state and boost self-confidence. 【Automatic Male Masturbator】- Comes with a penis pump sleeve, removable vibrator for multiple stimulation, stimulating more hardness when sucking and squeezing. The penis pump sleeve is made of high quality soft silicone. 【Intelligent LED display】 - Penis Stimulator with LCD display and USB charging design, display, results at a glance, penis pumping training pump with clear scale designed on the transparent tube, the screen will display the corresponding air pressure and level, the lining has a non-slip function, automatic penis pump can effectively generate or release pressure