Health, Safety, and Efficiency! FUNCTION & SUGGESTIONS Passive congestion of peenis is caused by negative pressure suction, leading to dilation of blood vessels and urethral sponge tissue. Provides nutrition for weak or atrophied tissues With periodic training, it leads to significant improvements in both length and circumference for your brother, stronger errrections, and a new level of sexxual confidence(3-5 times per week/no more than 20 minutes per time)For beginner, please start with low settings. Using unbearable high pressure may cause injury Easy To Use, Amazing Results! POWERFUL VACUUM SUCTION INTENSITY We have received a massive amount of praise from users： The materials used are sturdy and durable, ensuring long-lasting performance.The design is ergonomic, providing a comfortable and secure grip during use.The transparent cylinder allows you to easily monitor my progress! The video showcases the product in use.The video guides you through product setup.The video compares multiple products.The video shows the product being unpacked. How do I use this pump effectively?How do I prevent balls from being sucked into the cylinder? Usage Tips From Real User: Use the best size silicone ring → Use water-based lubricant on the outside of the silicone sleeve → Press the silicone base onto your pelvis, do not lift or move it towards you→ Start to pump! Why does my pump automatically shut off within 10 seconds? Some users unplug the cylinder or start the pump without blocking the cylinder, without creating a sealed environment, resulting in complete air pressure leakage. Therefore, the LED cannot detect air pressure and is set to shut down in idle mode. Why is it necessary to reset the pump before using it in areas above 1000 meters above sea level Due to the initial air pressure in high-altitude areas, it is necessary to reset the pump's air pressure to 0 in order to function properly What should I do if I need some accessories? For example, cylinders, charging cables, silicone rings, etc Please write to Alice through the information in the user manual, and we promise to solve these problems for you！ What should I do if there is a functional malfunction or other issue with the product? The user manual contains the email of our support team, and we promise to response every message we receive!