Features: Experience precise noise measurement with the ZL81A Digital Decibel Meter, featuring a high accuracy sensors that ensures reliable data for effective sound monitoring. Equipped with a clear digital display, this handheld device offers actual time noise level readings and supports a wide decibel ranges to suit various environment. Ideal for family concerned about home noise pollution, professional like engineers and architects, as well as students conducting sound analysis. Perfect for use in diverse setting such as homes, offices, schools, hospitals, and mall to assess and maintain proper noise level. Its lightweight design makes it easy to carry and use anywhere, while its replaceable battery guarantees high performances without frequent changes. Specifications: Component:Plastic Size:Approx.5x3.2x17cm/1.97x1.26x6.69inches Package Includes: 1Pc ZL81A Digital Decibel Meter note: Please allow 1-2cm error due to manual measurement. Please make sure you do not mind before you bid. Due to the differences between different monitors, the picture may not reflect the actual color. Thanks!