General description The 4.2V Brushless Motor Fan is a high-speed mini handheld fan designed for turbo applications. It features a robust construction made from high-quality materials, ensuring durability and ease of use. Technical specifications Rated voltage: 4.2V Maximum speed: 40000 RPM Wind speed: 11 m/s Noise level: ≤ 85 dB Rotation direction: CCW Measurement allowed error: +/- 1-3 cm Other information Power supply voltage must not exceed 5V Ensure correct polarity connection to avoid damage Package contents: 1 * Brushless Motor Color may vary slightly due to light reflection and display differences