Perfect for training with a digital timer. This is the Circle Twister from Media Price. It's a type that is used on a chair. You can easily tighten your waist and strengthen your abdominal muscles by sitting. The direction of rotation changes automatically. You can also adjust the speed of rotation. It can be used by a wide range of people, from young people to the elderly. It has been used only a few times, so there are no noticeable scratches or stains. Operation has been confirmed, and it is almost unused with no noticeable scratches or stains, but the black cover has rubber stretching due to aging, and the back side has scratches and dirt (photo 12). Please understand that this is a used item before purchasing. Operation has been confirmed. - Circular plate - Display: Digital timer and setting buttons - Power supply: AC adapter connection Easy exercise while sitting ☆ Rotational exercise ☆ Core strengthening ☆ Exercise deficiency解消 (Lack of exercise解消 - needs clarification) ☆ Aerobic exercise ☆ Pelvic exercise stretch ☆ Shape up Thank you for viewing.