About the product
Pure Tone, Speech, Masking, Field & Special Tests, Completely Digital-No FrequentCalibrations, Upgradeable To High Frequency Upto 20 KHz, Pocket Size & power through USB port, Automatic Synchronized Tone & Masking, Automatic Synchronized Tone & Masking, Automatic calculation of Spech Scoring, Choice of TDH 49 or Insert Ear Phones
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