Feature : Measurement Range: 30dBA - 130dBA Accuracy Within +/-1.5dB; Resolution: 0.1dBA Large LCD screen display(NO BACKLIGHT); 15 minutes auto power off Data hold function Max/Min sound level measurement Specification: Frequency range: 31.5Hz-8kHz Range: 30-130dBA Microphone: 1/2 inch electric condenser microphone Calibration: Electrical calibration with the internal oscillator Display: LCD 4 digits Sampling frequency: 2 times / sec Power: 3*1.5V Batteries (Not included!) Size: 49*33*159mm Operating condition Temperature: 0~40C Humidity: 10~50% RH Storage situation Temperature: -10~60C Humidity: 0~90%RH Package includes: 1*Digital Sound Level Decibel Meter Note: 1.The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness 2.Please allow slight deviation for the measurement data Hope you can understand, thank you!