Prince O3 Silver OS+ Prestrung Tennis Racquet: * Super aerodynamic frame * More responsive string bed * Sweet spot increased by 54 percent to create a "sweet zone" * You hit your best shots and more often * Length: 27.5" * Head size: 105 square inches * Cross section: 23-25-23mm * Weight: 9.9 oz/280g (unstrung) * Balance: 13"/33"cm * Power level: 1100 * Swing weight: 285 * String pattern: 16 x 19