Digital Sound Level Meter, 30 to 130 dB dB Range, Frequency Range 31.5 Hz to 8 kHz, A and C Frequency Weighting, Accuracy +/-1.5 dB, Resolution 0.1 dB, Display 4 Digit LCD, Fast/Slow Response Time, Standards ANSI and IEC Type 2, Includes 9V Battery, Instructions, Manufacturers Warranty Length 1 yr