Description: This Electronic Acupuncture Pen is designed for pain relief, based on transcutaneous electric nerve stimulation, handy and  fast working, relieve your pain in a healthier way. come and have a try now! Functions of three heads: (1) Dome type:Superficial therapy, which is applicable for health care and facial beautification; (2) Node type: Node therapy, which is applicable for partial body pains; (3) Spheroidal type: Partial therapy, which is applicable for quickly alleviating pain. Note: Pls carelly read the manual book before using. Specification: Type: Acupuncture Pen Material: ABS Color: Silver Battery: 1 * AA battery( not included) Output: 3.7V;300mA+/-50mA Pulse Frequency: 0.01-300Hz Pulse Width: 100us-320us Maximum Output Extent: 500ohm Load Voltage: 3.3V Item Size: 18 * 2.5cm / 7.1 * 1.0in Item Weight: 62g / 2.2oz Package Size: 15.5 * 7.0 * 3.0cm / 6.1 * 2.8 * 1.2in Package Weight: 67g / 2.4oz Package List: 1 * Pulse Analgesia Pen 3 * Head 1 * User Manual