Regarding charging precautions: 1. The initial power of the product is 30%. After long-distance international logistics transportation, it is recommended to charge it for 3 hours before the first use. The product is suitable for low-voltage ports such as power banks and computer USB (≤5V). It is forbidden to use mobile phone fast charging adapters and other devices for charging, as this will damage the circuit board. 2. The charging port is USB magnetic charging. Please ensure that the magnetic charging port is correctly aligned. The light will flash during charging. Bumping or displacement of the product may cause the magnetic interface to be misaligned and unable to charge. If it does not flash, it means it is not charging. Please realign the charging port. 3. If it still cannot be charged, please check whether the magnetic charging port has water stains, dirt, rust, etc., and wipe it clean. 4. If the product has not been used for a long time, please maintain the habit of charging it once a month. Long-term power loss of the lithium battery may cause permanent damage. This is a characteristic of lithium batteries. If the battery is dead and cannot be charged, you can appropriately increase the charging voltage, for example, use a mobile phone fast charging adapter to charge for 20 minutes, and then replace it with a low-voltage adapter to continue charging. If the product light flashes, it means it is charging. For first-time users, it is recommended to start with the lowest setting We recently received customer feedback that excessive pressure can easily lead to injury. In response, we state the following: This product offers two modes: pressure maintenance mode and circulation mode. The pressure maintenance mode has 4 intensity levels, with the lowest being 0-35kPa; the circulation mode has 3 intensity levels, with the lowest being only 25kPa. This basically covers most of the pressure ranges on the market, and we recommend customers start with the lowest setting. This product also features a one-key pause and deflate function (this function has the highest priority and can be paused at any time in any mode). Please note, before use, be sure to understand your suitable initial pressure value (unit: kPa). If any pain occurs, immediately pause and deflate (pause and deflate are the highest priority) to avoid injury. ● IPX7 offers complete waterproof protection, making it suitable for use in the bathtub, easy to clean, and pressurizes water baths for optimal results. ● Choose from 4 suction and pressure hold levels, along with 3 cycle training levels, for a safer and simpler experience with one-click deflation. ● Monitor pressure values in real-time with the silicone screen display. ● The noise-reducing motor combines a 3.5M motor with a soundproof silicone strip for quiet, waterproof operation. ● The masturbation cup mode is compatible with TPE vaginal soft glue (note: vaginal sleeve not included) and provides a 3-speed cycle. ● Comes with 2 high-purity silicone rings for longer service life. Product parameters: Function: 3-speed cycle + 4-speed pressure maintaining and sucking + one-button deflation Pressure level: 0-35 kPa, 0-45 kPa, 0-55 kPa Waterproof grade: IPX7 (can be used in bathtub) Air pump: 370 fully waterproof air barrier membrane + waterproof solenoid valve Barrel height: 20cm Barrel mouth diameter: 6.5cm Silicone ring diameter: 2cm+2.5cm (+0.2cm) Material: silicone+ABS Working voltage: 3.7V Charging time: 2.5 hours Working time: 2-2.5 hours Charging: USB magnetic charging Noise: less than 60db Certification: CE ROHS IPX7 100% waterproof: unlike conventional electric pump, our pump is really IPX7 waterproof, you can use it in the bathroom and in the bath for a better sexual experience. The pump is very easy to clean and can be completely submerged in water for real cleaning, which is safer and more hygienic. enlargement and extension of sex time: this electric pump strengthens 60% of the muscles in the by vacuum pressure and promotes a fast, larger, stronger and more lasting erection. The vacuum pump is the perfect choice for a sexual foreplay, with the included ring set extends your intimacy and leads to better love play 4 different suction intensities: the pumps have 4 selectable suction levels, including a constant pressure mode with 1-3 levels and the intelligent suction mode with 3 levels. After you turn on this men's sex toy, you can select the desired training mode for enlargement by touching the LCD display. Silicone screen display and super quiet: unlike other vacuum pumps, automatic suction electric pump is super quiet and offers you intense pleasure. The torment pump is equipped with an Silicone screen display on which the corresponding air pressure is displayed. This makes the operation easy and helps you understand yourself even better. Scenario 1: 【↑↑】Suck Function There are 4 levels. Levels 1-3 belong to the pressure-maintainin