... /6020A sound level calibrator Sound level: 94dB, 1kHzDisplay 54mm×42mm LCD digital display, analog watch handDisplay measuring mode, measuring time, clock, 1/ ... 1 center frequencyBacklight display functionPower 5 pieces of alkaline batteries, DC 7.5v, with ... Printer: 178mm×81mm×31mmWeight 0.4kg , printer: 0.41kg digital sound frequency analysis meter