[Digital Sound Level Meter]: This sound level meter is a digital device that measures the sound pressure level in decibels (dB) and can accurately measure the sound pressure level in the range of 30-130dBA. [High Accuracy]: The sound level meter is designed to accurate measurements with a of accuracy. [, Classroom and Street]: The sound level meter is suitable for use in homes, classrooms and streets, allowing you to monitor the noise levels in your environment. [Noise Decibel Reader]: The sound level meter is a noise decibel reader that can accurately measure the sound pressure level in the range of 30-130dBA. [Easy to Use]: The sound level meter is easy to use and comes with an LCD display for easy reading of the measured sound pressure levels. color: Black material: plastic Measuring Range:30~130dB ;Accuracy:1.5dB(94dB@1KHz);Display Resolution:0.1dB Package Contents: 1 x Digital Sound Level Meter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.