... .body Functions and operationBig ultrasound head1. Applied gel on fleshy parts (eg. abdomen, hip, thigh) the ... 4, put the service brake under your feet, step on to start working, move away for pause. 4. ... Beautician holds the ultrasound head to move slowly on skin, in circle or beeline repeatly, the other ... . 5. Do not use on back, avoid using on bones. 6. Don’t use on uterus part when women do ...