YONEX Muscle Power 650 UL1 Soft Tennis Racket. The YONEX Muscle Power 650 is a high-performance racket that utilizes Ultra Mighty technology. - Brand: YONEX - Model Name: Muscle Power 650 - Accessories: None - Technology: Ultra Mighty Technology Retail Price: 21,000 yen Size is UL1. It has been used very few times and is in very good condition. There are some minor scratches on the head, but it is generally in a clean condition. The grip film has not been removed. Thank you for viewing. Please check the condition in the images before purchasing. No returns or refunds after purchase. Direct purchase and immediate purchase are OK. Thank you very much.