1、Multi Functional Design: The sound level reader can be used not only to measure indoor and outdoor environmental noise, but also for noise testing in different scenarios such as construction sites, cars, and workshops. 2、High Accuracy Measurement: The sound level meter accurately reads the environmental noise level and provides reliable decibel measurement results. 3、Digital Display: The clear digital display screen of the digital sound level meter makes it easy to quickly read and analyze noise data. 4、Compact and Portable: The decibel meter is lightweight and compact, making it easy to carry and operate with one hand, suitable for various scenes. 5、Battery Powered: The sound noise meter is equipped with 3 AAA batteries, a windproof sponge ball, and a user manual. The decibel meter has been adjusted correctly and can be used immediately after installing the battery. Item Type: Sound Level Meter Product Material: ABS Weight: Approx. 178g / 6.3oz Measurement Range: 30~130dBA Accuracy: ±1.5dB Resolution: 0.1dB Frequency Range: 31.5Hz~8KHz Sampling Frequency: 2 Times Per Second Battery Type: AAA Battery (Shipped With Matching Battery) Number Of Batteries: 3 Single Battery Capacity: 1300mAh 1 x Noise Meter 1 x Protective Sleeve 1 x Windproof Ball 3 x AAA Battery 2 x Manual