Sound Level Min. dB = 35 / Sound Level Max. dB = 130 / Sound Level Resolution dB = 0.1 / Sound Level Accuracy dB = 1.5 / Accuracy Class = Class 2 / Microphone Type = Electret Condenser / Display Type = LCD / Battery Type = 1x 9 V / Frequency Measuring Range Max. kHz = 8 / Frequency Measuring Range Min. Hz = 31.5 / Built-in Calibrator = Yes