... roller to lift up the skin along with subcutaneous tissue, and then vacuum suction rollers roll forward ... rollers: clean lymph, and breast care and lifting up Functions & Effects 1. the motorized head for ... : 8m3/H Negative pressure/ Vacuum pressure: 0.2---0.8bar Release/Suction Frequency :0.1—5Hz Roller ... direction: roll in, roll out, roll up, one roller ...