Three different speeds and three angle adjustable arm positions allow you to reach and treat different muscle groups with the massage intensity that feels best, so you can start feeling better in no time. 3 Speed ​​Massager SOFT For sensitive muscles, low speed while clearing lactic acid to relieve stiffness and pain It helps MIDDLE Not too small or not too delicate and does not require deep tissue massage for muscles. HARD Need for deep tissue massage for larger muscles that hear