I am selling the following item. The cardboard box has been opened, but the main unit is unopened, brand new, and unused. I purchased it but no longer need it, so I am selling it. https://ashiyabiseitai.com/product/e-training-hopper/ — Product Description (reprinted) By moving your knees in a position higher than your pelvis while sitting, you can exercise not only your legs but also your pelvic area and abdomen! By moving while stimulating the muscles with EMS※A, the muscles are also moderately loaded, allowing for effective exercise. ※A Exercise that stimulates muscles with electrical current ■ [Main material] Steel [Screw part] Stainless steel ■ Size (approx. cm) / [Main unit] Width 28 x Depth 33 x Height 19 ■ Weight (approx. kg) / [Main unit] 3.3 ■ Power supply / AC100-240V 50/60Hz ■ Charging time / Approximately 2 hours ■ Built-in battery / Lithium-ion rechargeable battery ■ Weight capacity / 100kg ● Accessories / AC adapter ※ Cannot be used while standing. ■ The following medical electronic devices cannot be used. ・ Implantable medical electronic devices such as pacemakers ・ Life-support medical electronic devices such as artificial lungs ・ Wearable medical electronic devices such as electrocardiographs ■ The following people cannot use this product. ・ Those with heart disease or suspected of having heart disease (Those who feel discomfort such as pain or palpitations in the heart) ・ Pregnant women and those immediately after childbirth ・ Those who have been prohibited from exercising by a doctor ・ Those with venous thrombosis or suspected of having it ・ Those with wounds on the soles of their feet ・ Those who have metal such as bolts implanted in the area from the hip joint to the toes ・ Those who are drinking alcohol ・ Those with a fever (38°C or higher) ※ Those with malignant tumors, heart disease, circulatory disorders, those taking medication, those undergoing treatment at a medical institution, etc. If you have any concerns, please consult with a doctor before using.