USB rechargeable EMS abdominal muscle belt with intensity adjustment function. - Type: EMS abdominal muscle belt - Power: USB rechargeable - Operation buttons: ON/OFF, intensity adjustment button - Material: Silicone - Size: Free size I purchased this at an electronics store about 5 years ago. I didn't use it much and it has been stored at home. Operation and charging have been confirmed. All the parts shown in the photos are included. Please refrain from purchasing if you are sensitive to used items. Simple shipping will be used. Thank you for viewing.