Noise Dosimeter, Includes Carrying Case, Dosimeter, Microphone, Wrist Strap, Digital Display Screen Type LCD with Backlight, Frequency Weighting A, C, Maximum Frequency Measurement 8 kHz, Maximum Sound Level Measurement 130 dB, Minimum Frequency Measurement 31.5 Hz, Minimum Sound Level Measurement 35 dB, Number of Records Stored 16, 000, Sound Level Measurement Accuracy +/-1 dB; +/- 1.5 dB; +/-2 dB; +/-3 dB; +/-5 dB, Sound Level Measurement Resolution 0.1 dB, Interface USB