Features Noise Testing: Able to test the decibel to show the sound level, the noise meter will provide you with real time data. High Accuracy: With 30‑130dBA measuring range and ±1.5dB accuracy, also ensures quick response and high sensitivity. Better Design: Comfortable hand feel together with non slip design and digital display will largely simplify operation. Broad Utility: Enables wide application the the detection in factory, office, home, school, restaurant, hospital, etc. Easy Carrying: Compact in size and light in weight as well, the easy carrying makes it ideal for indoor and outdoor. Specification: Item Type: Sound Level Meter Material: ABS Battery: 3 x 1.5V AAA battery(without battery) Function: For sound level detection.  Measuring Range: 30~130dBA Accuracy: ±1.5dB(94dB, 25℃ ±2℃) Resolution: 0.1dB Frequency Range: 31.5HZ~8KHZ Frequency Weighting: A Package List: 1 x Sound Level Meter 1 x User Manual Package List 1 x Sound Level Meter 1 x User Manual