Specification: Output intensity: 0-10 mA Power supply: AC110-240V DC 3.7V Frequency control: adjustable LCD digital display: Frequency speed display Indicator Light: Pulse Rate Display Point detection: meter, sound and light display Pulse width: 220 microseconds Pulse modes: Continuous Waveform: Asymmetric biphasic square wave Precautions: 1.not suitable for pregnant women and patients with hypertension. 2.Um to find the points, do not press the treatment button while recognizing the meridian point. 3. When the skin is DRY, use before use gel, conductive liquid, cream or cosmetic lotion to realize more precise acupuncture points.SAFETY AND WARRANTY: If there are quality problems with the product, please contact us as soon as possible. We have a professional after-sales team, which will solve your problem within 24 hours. FEATURES: This laser acupuncture pen works on the principle of the single-phase electricity and must rely on the body's static electricity left to form a loop. If you can give other people acupuncture treatments, he must put his hand on your skin, acupuncture pen works. If it is not on the skin, the energy meridian pen still works, but you feel nothing . THREE TYPE SAMPLES: There are 3 different probes for treatment BEAUTY probe only for the face, the facial skin to release and relieve the skin cents wake up pain. Phenomenon like 'Electric numbness, electrical stimulation' of the electronic acupuncture pen, not a quality problem, but its working principle . Acupuncture Pain Relief: Suitable for human wrist, feet, elbows, ankles, neck, waist, back, ear, face, shoulder, back, leg, knee, nerve, muscle pain, tennis elbow. It also serves as a therapy aid for various diseases such as frozen shoulder, arthritis, and neuromuscular pain. The treatment time is one or twice a day, for the massage at an acupuncture point or an area of ?skin about 3 to 5 minutes . Wireless acupuncture pen INTELLIGENT FINDS POINT: The electric acupuncture pen will automatically recognize the detection of points, technology combined with the precise positioning of acupuncture points, adjustable frequency and 10 sensitivity levels. This offers a needle-free, clean and painless acupuncture stimulation for a safe, improved circulation and muscle pain .