Sound Level Min. dB = 35 / Sound Level Max. dB = 130 / Sound Level Resolution dB = 0.1 / Sound Level Accuracy dB = 1 / Accuracy Class = Class 2 / Microphone Type = 1/2 " Electret Condenser / Display Type = Backlit LCD / Battery Type = 3x AAA, 1.5 V / Built-in Calibrator = No