Purchased in 2021 and used once every 2-3 months. Not used since 2024. This is a type that connects directly to the rear wheel of a road bike after removing it. It works without any problems with training apps like Zwift. (Contents) ・Main unit ・Front wheel block ・Power supply ・Other accessories (instruction manual etc. included) ・Quick release and sprocket were not included at the time of purchase, but I will include the ones I used. ※The black mat in the photo is not included.