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Video about the product,you can know how to use the pump. Theory: 1. Negative pressure/suction helps to relax the smooth muscle cells, this allows for sponge swells. 2. After the sponge expands, arterial blood flows in to speed up the sponge hyperemia and increases the hardnessof your . The more the sponge is iated, the more solid your will be and the more it will grow. 3. Air pressure will increase your cavernous body, with low vacuum pressure in the cylinder, your cavernous body will be exercised in a physical safe way. 4. Universal design, fits all. This is the real vagina forMasturbate while exercising There are differ size for rubber rings Use sestions It is recommended to exercise once a day in the morning and evening, 5-10 minutes at a time, pumping to the to comfortably erect, perceive the to pull, pause for 1-3 seconds, then release the pressure, pause for 3-5 seconds,Then cycle extraction and deflated. Note: You cant be in the extraction state for a long time, you must extraction and deflate the circulation to avoid hurting the . Usage time : 1. (1~5) days, 5 minutes a day, up to 2 times a day 2. (6~10) days, 8 minutes a day, up to 2 times a day 3. (11~15) days, 12 minutes a day, up to 2 times a day 4. (16~20) days, 16 minutes a day, up to 2 times a day 5. (21~25) days, 20 minutes a day, up to 2 times a day 3 months of exercise time Operational Guidelines: 1. Ensure that all parts are securely connected. 2. Apply a little lubricant around the silicone ring to reduce friction. 3. Gently insert your , ensure that the seal is airtight around your . Instructions for use: 1. Before using,please chagre it for 2 hours. 2. Long press the power button to turn on and off. 3. Automatic mode (operating mode will automatically cycle) 4. Manual mode (Short press change working mode)