1. Product detailsThe battery capacity of the product is 200mAh and there are 8 modes and 19 levels which are beat/massage/activation/train/knead/shaping/extrusion/slap,1-19 intensities, you could select the different mode and level for different purpose to relieve and lessen the discomfort of the corresponding part of the body.2. Must read before use(1) When using the massage patch, the controller will automatically shut down every 15 minutes, if you want to continue using, pls switch on manually.(2)The controller will automatically shut down within 15 seconds if your skin doesn't touch the patch.(3) Don't use when charging. The red light is on when the controller is charged and the red light is off when it is fully charged.3. How to use(1) Snap the little controller on the patch.(2) Remove the transparent film from the patch.(3) Stick the patch to where you want to massage.(4) Press button "+" to turn on or increase the intensity.(4) Press button "M" to change the mode.(5) Press button "-" to shut down and decrease the intensity, when it shows "0" on the LCD display, it means the controller has been shut down.Note: Pls set the lower intensity at the first use and then adjust to the intensity which is suitable for you after adapting to the lower intensity.