It is light weight and ergonomic, making it a-fine tool for monitoring noise intensity, suitable for sound quality control in factory, office, home, school and construction site. Built-in capacitive microphone with high sensitivity and accuracy. The microphone is designed with-a windproof-sponge, more accurate sound collection, filtering the impact of wind on the sound. Equipped with thoughtful-digital screen with backlights, large screen display for easy data reading, easy to cope with strong light, night and other harsh environments. It can measure and record the maximum and minimum values, supports data retention, with automatic-shutdown and low battery functions, convenient and practical to use. Soft rubber keys-design, and the-anti slip sides ensure the decibel meter is easy to grip, comfortable to use, not easy to wear.