The Resonacne R35C-PT is a combined clinical Audiometer Tympanometer Combination. It’s an extremely comprehensive unit. The Audiometer tests Air Conduction, Bone Cone Conduction, Freefield, Speech ( Live & Pre-Recorded) as well as an array of special tests. The tympanometer does 226Hz, 678Hz, 800Hz & 1000Hz probetones, it also conducts Ipsi and contra reflexes. The unit has a built in printer as well as the fuction to print-to-PDF.