After receiving the product: Charge for 2 hours first. Step 1: Before use, use water or aloe vera gel with essential oil to wet the neck and the massager's head, to prevent dry skin from impeding the product's functionality and to reduce skin irritation caused by the electrical current. Step 2: Place the cervical massage device on the neck; it will work once it touches the skin. Step 3: Since everyone's body resistance is different, if you feel too little strength, the gear can be adjusted. This Neck Massager is not a vibration massager; it uses TENS (Transcutaneous Electrical Nerve Stimulation) and EMS (Electrical Muscle Stimulation) to provide care. The voltage of this product is 5V, which is a safe voltage. There are models MJ88, H62, F30, and F6. F6 - No heating. F30 - No heating. H62 - Heating is on by default when powered on; long press the "+" key to switch heating on/off. JT88 - Heating is off by default when powered on; long press the "-" key to switch heating on/off. Kind reminder: Model F6 fits individuals with slim necks; if you have a thicker neck, please refer to the size specifications. Model F30 is optimized for users with wider necks.

Product specifications