Specification: Main Material Body: PET resin gel Pad: Polyacrylamide Glycerin Remote: ABS resin Frequency: 12. 5Hz-48Hz EMS devices: USB rechargeable Power: DC4. 2VOutput: 135mAh Each EMS machine can be individually adjusted mode and intensity. You can also use 3 abdominal muscles posted simultaneously, to adjust the required mode and intensity respectively. The abs toner is the elicitation of muscle contraction using electric impulses. The impulses are generated by a device and are delivered through electrodes on the skin near to the muscles being stimulated. The electrodes are generally pads that adhere to the skin. The impulses mimic the action potential that comes from the central nervous system, causing the muscles to contract. It is suitable for abdomen, arms, waist and legs. With 6 exercise modes. High quality abs gel sheet, conductivity improves 30%. Ultra thin and compact. You could get away with wearing this underneath a sweater if you wanted at work and no one would know it\'s there, so you get a great workout in just 20 minutes a day. Note: Not to be used the equipment in the following conditions: 1. People who are using pulse regulator or implant electronic equipment for medical treatment 2. Patients who had surgery recently3. Patients with epilepsy 4. Blood circulation disorder patients5. Pregnant women and postpartum women6. Skin is not suitable for the use of hydrogel pad7. Not to be used when sleeping, driving or operating machine Improper use would carry a potential or actual danger Gel pads are replaceable, if you feel it is not adhesive after using a while, please change the transparent gel pads. (BONUS: 10 replacement gels are given! )Package List: Main Machine * 3ABS Gel Pad * 1Body Fit Gel Pad * 23 in 1 USB Cable * 1Manual * 1Replacement Gel *10