Ultrasound Unit With 3 standard Applicator * The Sonicator 740x has all the features of the Sonicator 740 but comes standard with all three available applicators-a 5 cm˝ dual frequency applicator a 10 cm˝ / 1 MHz applicator and a 1 cm˝ / 3.3 MHz applicator * All three applicators can be stored on the unit itself to keep them available at all times * The Sonicator 740 is 1 and 3 MHz therapeutic ultrasound unit which comes with a 5 cm˝ dual frequency applicator * It is light-weight and portable and features a universal applicator cable to make changing applicators quick and easy * There is an optional rechargeable lithium ion battery pack that truly allows you to take therapy on the road with you * Large soft-touch controls let you set-up treatments quickly and easily and the backlit display shows all treatment parameters and conditions * Weight: 3.75 pounds (1.7 kg.) without battery * 4.5 pounds (2.0 kg.) with battery * Dimensions: 13.5 L x 9.5 W x 7 H * Depth of penetration * Arrows indicate the relative depth of ultrasound penetration between 1 MHz and 3.3 MHz frequencies *