I think it's relatively clean because I haven't used it much. It works without any problems. There is no instruction manual, but you can get it here: https://www.shopjapan.co.jp/files/topics/9328_ext_02_1.pdf [Size] 430mm (width) 455mm (depth) 200mm (height) Weight: Approximately 7 kg Weight capacity: 100kg Accessories: None Body only