Pyle PSPL03 Mini Digital Sound Level Meter with A Frequency Weighting for Musicians and Sound Audio Professionals Max Hold Function - Frequency Weighting: A - Weight: 3.77 oz. Small Shape for Easy Portability - Operation Temperature: 0 to 40C (32 to 104 F) Level Range: 35-100dB - Storage Temperature: -10 to 60 C (14 to 140 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