Product Material: PC, siliconeSize: 142*138mmColor: whiteBattery: polymer batteryBattery information: 1600mAhInput standard: DC /5V DCMaximum power: 5WQuiescent current: Quantity: 1 piece Package Contents: 1 * Smart Neck Massage Device1.Electric neck massager adopts ergonomic U-shape design is made of breathable soft silicone material, perfectly fits human neck skin, provides comfortable touch for relief and relaxation of neck muscle pain, stiffness and fatigue, improve sleep quality and promote blood circulation.2.The smart neck massager is light and portable and convenientto take with you at home, in the office, in the car, at the gym and when travelling. Compact fashion design, ideal for you when you carry this massager on the way to go shopping, running, reading, etc.3.Easy OperationHold the switch press and hold for 2 seconds to start. 3 massage modes (acupuncture / tapping / massage mode), 15 intensity (+/-) and heat function settings on the remote control are convenient to choose the modes you want to get a comfortable massage. The neck massager also comes with a USB charging cable for you to use it anytime, anywhere.4.Use Safety Tips Please do not use the neck massager for more than 15 minutes to cause muscle fatigue or physical discomfort. If your neck skin is dry, wipe the neck with a damp towel before use for better application. Note: This neck massager uses electrical pulse therapy. Do not use where implantation of a pacemaker or carrying metal on the body is prohibited.