The Sonaris unit is a modern device designed for carrying out treatments, using the ultrasound therapy. In co-operation with the electrostimulator it allows to perform combined therapy. The unit is available in two versions: S – version co-operates with two types of ultrasound heads: effective radiation area of 4 cm2, generating ultrasound wave with frequency of 1 MHz or 3,5 MHz, effective radiation area of 1 cm2, generating ultrasound wave with frequency of 1 MHz or 3,5 MHz. M – version co-operates with one type of ultrasound head: effective radiation area of 4 cm2, generating ultrasound wave with frequency of 1 MHz. There is no option to extend one headed M version to two headed S version. The unit distinguishes itself with its sophisticated design, ergonomics and high quality of workmanship. It is also user – friendly