Features1Portable: Small and pen shape design make this smart massager is easy to carry and operate. 2Muscle Massage: The combination of modern electronic technology and bionics, moderate massage strength, good penetration force, direct to the bottom of the muscle. 39 Strength Levels: With 9 levels of strength to choose according to your different needs. 4Hot Compress: With heating function, promote blood circulation, dredge meridians, make you warm, relaxed and comfortable. 5Different Massage Heads: With multiple massage heads for you to choose to massage different body parts.SpecificationItem Type: Body Meridians Massage PenMaterial: ABS6 Massage Techniques: Pulse massage, scraping massage, tuina massage, head massage, finger pressure massage, point massage. Power Supply: Lithium Battery (Included)Battery Capacity: 500mAh Size: Approx. 19 x 3.5 x 2.5cm / 7.48 x 1.38 x 0.98in Prohibited People: 1. It shall not be used at people with internal transplantation electronic instruments, artificial heart, lung and other medical electronic instruments. 2. Pregnant women and women with menstruation, skin abnormalities, high fever and other acute patients are prohibited to use. 3. It shall not be used by children or people without the ability to express consciousness. 4. Tumor and other severe and emergency patients are forbidden to use.How to Use:1. The correct posture of holding the instrument: like holding a pen, there is a backflow sheet on the back of the instrument, and when the skin between the thumb and index touches the backflow sheet, the backflow can be formed. 2. Long press the power button for 3 seconds to switch the machine. The default value is 0 when the machine starts up.(No output, adjustable micro electric gear position of front end); The machine has 2 outputs, the patch and the massage head are independently controlled, can be used alone or at the same time. 3. After the machine is turned on, the output gear of the massage head is displayed (the lower right corner of the digital tube is light). Press "+/?" to adjust the corresponding strength, and the range is "0?9". 4. Replace massage head: this instrument comes with different massage heads, when replacing, rotate and screw off, and then rotate and tighten it. Package List1 x Intelligent Meridians Pen 4 x Massage Heads 1 x Electrode Line 8 x Electrode Patches 1 x English Instruction 1 x USB Charging Cable