A. This is a propeller suitable for various scenarios. It is made of PC material, which has relatively high strength and can provide stable and strong power support for the equipment using it. B. In terms of design, it adopts a unique fully submerged propeller design. This design allows it to better contact with water during operation, reducing energy loss and improving operating efficiency. Its size is compact, less than 30 centimeters, making it easy to install and operate. Whether used for model boat modification or DIY creation, it can be relatively easily adapted. C. It has a wide range of uses. It is not only suitable for remote - controlled boats but also for helicopter models. For enthusiasts who like to modify remote - controlled boats themselves, it is a good option to help build personalized remote - controlled boats with better performance. In addition, it has special functions for bait boats, providing convenience for fishing enthusiasts when putting out bait. D. The product is packaged in a bag, which is convenient to carry and store. It has 6 channels and can be remotely controlled via a handle. The operation is simple and easy to understand, and even beginners can get the hang of it relatively quickly. At the same time, it helps to develop various abilities, such as promoting emotional communication, exercising vision and hearing, developing intelligence, cultivating hands - on and problem - solving abilities, and improving hand - eye coordination. It is very suitable for parent - child outings, enhancing parent - child interaction and communication, and cultivating children's hobbies. There is also a shopping guide video that allows you to more intuitively understand the product's usage methods and features. It is a toy suitable for people over 14 years old, with a total take - off weight of 0 - 250 grams (excluding 250 grams). Whether for personal leisure and entertainment or participating in model competitions, it can bring a good experience.