It has 6 different shaking frequency which is adjustable by simply putting your finger on the screen On/Off icon. Touch the icon 1 time to switch, 2 seconds to turn on or turn off. The screen will show the current shaking mode. It has 4 different massage touch feeling cap which is easily replaceable. Built-in 1800mah power bank which is rechargeable after use. A USB wire charging plug is suitable for most situations. It is a great tool for muscle pain release after sports training. Suitable for plasticity, massage, fat reduction, relaxation, and physiotherapy. Let this massager gun be your sports recovery sidekick-it helps to relieve tightness, soreness, and stiffness in the neck, back, shoulder, and leg eliminate lactic acid, release fascia, and percussive therapy for deep tissue.