1. The battery display button is used to view the battery power visualization, eliminating battery life anxiety. You can check the battery level anytime. When charging, a colored light lights up at the bottom when it is not fully charged, and a red light lights up when it is fully charged. When the battery is full, the power turns off. 2. The fan uses upgraded noise reduction technology to effectively reduce the noise during operation, allowing you to enjoy the strong wind while maintaining a quiet environment and better relaxation. 3. Our mini blowing jet fan has a stepless speed adjustment function, supporting efficient cleaning through instantaneous hard pressing and maximum movement speed. You can adjust the wind speed at any time according to needs to meet the requirements of different occasions. 4. The Violent Hair Dryer Turbo has a super wind speed of 62 m/s, which can quickly cool down, enabling you to feel cool rapidly. It is suitable not only for the hot summer months but also for a refreshing and comfortable experience in humid weather.