Features

2 modes provide 2.5dB or 3.5dB accuracy
A and C weighting:
high and low measuring ranges: low (35 to 100dB) / high (65 to 130dB)
0.1dB resolution
fast/slow response
data hold and max hold function
large 3 1/2-digit LCD display with function indication
built-in calibration check (94dB)
complete with 9V battery and carrying case
Specifications

power supply: 1 x 9V battery (incl.)
dimensions: 225 x 58 x 33mm
weight: 250g
auxilary outputs: AC/DC signal output