The Sonicator 740 ultrasound device features a large back-lit liquid crystal display and one touch parameter entry. Includes a dual frequency 5cm2 applicator with direct crystal-to-patient contact. The Sonicator 740X has all the features of the Sonicator 740 but additionally includes a 10 cm2 1 MHz applicator and a 1 cm2 3 MHz applicator to give you maximum treatment flexibility. Maximum beam non-uniformity ratio: 6:1. ETL and C-ETL listed.