Upgraded acupuncture, comprehensive functions, high cost performance, better use of lumbar disc protrusion. It is a healthy choice for sending friends, parents, and loved ones. It is recommended to use 10-15 minutes each time, 2-4 times a day, and you will slowly feel good results after using it for about a month.The correction time and strength are mainly adjusted to the painful position according to the personal physical condition, so that you do n’t feel Discomfort shall prevail (after use: get up properly to avoid discomfort on the reverse side)