This item is a sound level meter, manufactured with sturdy plastic materials, so that it can serve you for many years. It is suitable for measuring noise level at outdoors. Its small size and light weight makes it easy to be carried for outdoor use. Features -Color:Black -Material:Plastic -Size:14.50X5.00X2.50cm/5.70X1.97X0.98in -Battery: 3 × AAA batteries (Included) -Frequency response: 31.5Hz-8KHz -Measuring ranges: 30-130dB -Accuracy: ±1. (94dB@1KHz) -Display resolution: 0.1dB -Operating : 0-40 degree centigrade -Operating humidity: 10-90%RH -Storage : -10 to 60 degree centigrade -Storage humidity: 10-75%RH - High accuracy: This digital decibel meter has a high accuracy of 0.1dB, ensuring precise measurement results. - Large display: The large screen display makes it easy to read and interpret measurement results. - Portable and lightweight: The compact and lightweight design makes it easy to carry for outdoors, suitable for on-the-go measurements. - Versatile applicable occasions: This Decibel Meter can be applied for a variety of applications, including environmental noise monitoring, industrial noise control, and more. - Long lifespan: The sound level meter is manufactured of plastic, safe and strong, not easy to deform or break, with a long lifespan. Package list: 1 x decibel meter