A. This is a circuit breaker and also an audio resettable fuse holder switch, specifically designed for scenarios such as cars, RVs, and yachts. B. It is cleverly designed and made of bakelite. Bakelite has good insulation, heat resistance, and mechanical strength, which can provide reliable protection for the equipment and ensure safety and stability during use. C. It has good adaptability and is suitable for general vehicle models. It can be easily adapted to different types of cars without worrying about compatibility issues. D. It comes in a wide range of specifications, covering various current ratings such as 30A, 40A, 50A, 60A, 70A, 80A, 100A, 120A, 150A, 200A, 250A, and 300A, which can meet the diverse needs of different users in different scenarios. E. In terms of usage, it can be used as a circuit breaker to provide overload and short - circuit protection for the circuit and ensure circuit safety. It can also be used as an audio resettable fuse holder switch to protect audio equipment and prevent damage to the audio caused by excessive current. It can safeguard the electrical safety and audio experience of equipment such as cars, RVs, and yachts. Additionally, self - owned brands can be licensed, offering more possibilities for your business expansion.