Frequency response: 31.5Hz — 8KHz
Accuracy(1KHZ): Calibrating spot (94 dB,114 dB)±0.5 dB,Max ±1.4dB 
Resolution : 0.1dB
Measure range: 30~130dB
LCD Display : 4 digits
Frequency weighting characteristics :  A characteristics
Measure range: 30~130 dB auto range
Response time : Analog Bars Display 125 Milliseconds,decibels(fast) 0.5 second;1 second(slow)

Microphone : polarized capacitive microphone
Power supply : 4pcs 1.5V No.7 battery
Working temperature : 0 ~ + 40 ℃
Working humidifier : 10 ~80 % RH
Storage temperature : - 10 ~ 60 ℃
Storage humidifier : 10 ~70 % RH
Size : 196*60*30mm
Weight : 128g(do not including the battery)
Accessories : User's manual,battery,sponge