Multifunctional display: In addition to speed display, it can also display other related data, providing more comprehensive information Highly precised measurement: With highly precised speed measurement function, ensuring accuracy and reliability. Handheld lightweight and easy to carry, allowing for speed testing, and practical. Optoelectronic digital display: Use optoelectronic digital display, it intuitively and clearly displays the speed of the spiraled leaf, making it for users to quickly obtain data. button simple and easy to use, button measurement, and fast