Using a 電動飛機杯 safely and correctly is important for both hygiene and product longevity. These devices are designed for adult use and should be handled with care and proper maintenance. Before using a 電動飛機杯, it is recommended to fully charge the device and ensure that all components are clean and dry. A compatible water-based lubricant is often used to enhance comfort and ... https://www.toysduck.com.hk/飛機杯/