Max Hold Function - Frequency Weighting: A - Weight: 3.77 oz. * Small Shape for Easy Portability - Operation Temperature: 0 to 40ºC (32 to 104º F) * Level Range: 35-100dB - Storage Temperature: -10 to 60º C (14 to 140º F) * Accuracy: +/- 3dB (ref. 94dB @ 1kHz) - Battery Type: 9V (Included) * Frequency Range: 31.5 Hz to 8 kHz - Dimensions: 6.69"" H x 2.28"" W x 1.38"" D