1.Cervical spine massager Main Unit is Only 3IN in Diameter and 0.7IN in Thickness. Relieve Muscle Discomfort, Activate Muscle Pressure, Achieve a Soothing Effect, Essentials for home travel. 2.Self Adhesive: Our unique cervical massage pad is self adhesive and reusable, which is very convenient for you, once it is attached, it is not easy to fall off. NOTE：Massage Pad Patches are consumables. If it does not work, you need a replacement part to replace the patch to work again. Description: Specification: Rechargeable/battery powered, optional Power supply: Battery powered: 2* AAA battery (not included) Rechargeable: USB charging (200 mA battery capacity) 10 Modes adjustable to meet different needs. Massage parts: neck/back/waist/buttocks/legs and other parts Massage techniques: Shiatsu, kneading, percussion, massage Wattage: 5W Voltage: 5V Packing List: 2* Leg Massager 1* English Manual 1* USB Cable (for Rechargeable Model) Notes: Due to the lighting effects and shooting angles, the color of the item and that shown in the picture might have a nuance. Due to manual measurement, there might be a tolerance in the product size. Product Usage Steps(Important information) Opening steps: Click in the numerical order of the icons First gear: Click 1→ 2 → 3→ 2 in order Second gear: On the premise of first gear, press 2, and then press 3 to adjust the gear. 2 times is the 2nd gear, and 3 times is the 3rd gear. Finally, press 2 to start. If you don’t want to use it, long press 1 to turn it off 5PCS Massager Patch Body Massager (Rechargeable) Buying Options Buying Options Type Accessories Machine