Features: 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 sensor 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 indicator 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. Specifications: Material:ABS Size:As Picture Shown Sampling rate FAST：125ms. Sampling rate SLOW：1000ms. Noise accuracy: ±2.0dB. Reference sound pressure standard: 94dB/1KHz. Frequency response: 31.5Hz~8KHz. Resolution: 0.1dB. Working current: ≤8mA. Working temperature: 0~40℃. Storage temperature: -20~60℃. Package Includes: 1x Decibel Meter note: ①.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. ②.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks for your understandings.