?SMART 130 is the world’s smallest digital diagnostic audiometer. Superb quality with 24 bit sound transducer. Indispensable for hospitals clinics, ENT clinics, and hearing care professionals. In connection with the laptop it is perfect for testing at the bedside. Energy saving – gets through the computer just 2W of electricity. Perfect for the diagnosis of both small and large hearing deficit. The maximum sound level of 130 dBHL. It works with a PC / Laptop, with USB 2.0 port, software Effetha and Windows XP / VISTA / Win7 both 32 and 64 bit.