Feeling in the use of the product:<br> 1.Hold the pen cap with your palm and feeling will more weaker on the arm. <br> 2. Use the nib to go to the acupuncture point on the instruction manual, and slide the nib use the acupuncture point. The place with the strong stimulation or the strongest stimulation is the correct acupuncture point.Automically search the acupuncture,it will not work if not find the acupuncture and if meridian obstruction;Treat this place。<br> 3. Everyone has different feelings of stimulation. Please start from level 1 and increase to comfort level , Not that the higher the level, the better the effect. It is most important to alleviate and solve your problem.<br> Note:<br> 1.It is not recommended for people with a pacemaker. If you need to use it, please test it from level 1 on a normal body part. Can be used after acupuncture test. If you can't accept the stimulation, please stop using it. I wish you health and happiness! Thank you!<br> 2.During hot weather, part of the gel may evaporate. Please do not worry. Using lubricating products such as lotions and massage cream at home can also reduce irritation. <br> 3.The working principle of the acupuncture pen is the principle of single-phase electricity, so the arm holding the pen during use will have a stimulating and a little numb feeling, like acupuncture, this is a normal phenomenon. If you cannot accept any vibration stimulation, please stop using it, thank you!e<br> Package Includes:<br> 1 x Meridian Energy Pen<br> 1 x Spheroidal Type Head<br> 1 x Dome Type Head<br> 1 x Manual<br> 2 x Gel The role of the gel is to relieve the irritation of the machine and skin contact, no special effect. You can use your home massage cream, lotion, aloe vera cream, etc. instead of gel, the same effect. 1 x Manual<br> 5 x dental floss pick (3 purple,2 yellow) If the packaging picture you received does not have our dental floss, you can request a full refund without returning the goods.