Features: 1. 100% brand new and high quality 2. Large LCD screen with double reading display can provide clearing value for you. 3. It is compact and you can carry it anywhere you want. 4. This meter uses a fast-responding analog bar graph to display sound level readings with a 50 dB range that is updated every 125 milliseconds to see different trends 5. Suitable for monitoring workplace machines, installing audio or alarm systems, handling product noise certification and reduction Specification: Condition: 100% Brand New Brand: PEAKMETER Model: PM6708 Sound Pressure Accuracy: ± 1.5 D B, ± 5 D B Sound Pressure Frequency Response: 30Hz - 8Khz. Dynamic Sound Pressure Range: 50 DB (Per Measurement Gear Level). Sound Pressure Measurement Range: 30-130 dB A, 35-130 db C. Sound Pressure Frequency Weighting Characteristics: A and C characteristics. Dynamic Characteristics of Sound Pressure: 125ms Faster, 1 Second Slower Microphone: Polarized Condenser Microphone. Digital Display: 4 Bits, Resolution: 0.1 dB, Sampling Rate: 2 times / sec. The Analog Bar Shows That Each Analog Bar Represents 1 dB and the Sampling Rate is 20 Times/Second. Measuring Gear Levels: 30-80dB, 40-90dB, 50-100dB, 60-110dB, 70-120dB, 80-130dB for a Total Of 6 Gear Levels. Automatic Shift Position: The Microcomputer will Automatically Select the Best Gear in the Range of 30 to 130dB. Below or Above The Limit Prompt: Display with ''Under'' or ''Over''. Power: 4x1.5V AAA Battery (not included) Color: Orange Weight: Approx. 328g / 11.6oz Size: As picture shown Package List: 1 * Digital Sound Level Meter 1 * User Manual 1 * Carrying Bag