Sound Level Min. dB = 30 / Sound Level Max. dB = 130 / Sound Level Accuracy dB = 1.4 / Response Time (Fast) ms = 125 / Accuracy Class = Class 2 / Response Time (Slow) s = 1 / Microphone Type = 1/2 " Electret / Data Logger = 129920 Records / Interface Type = USB / Frequency Measuring Range Max. kHz = 8 / Frequency Measuring Range Min. Hz = 31.5 / Built-in Calibrator = No