Offering the aerodynamic benefits of O3 technology, the Prince Ozone Four has infused the O-Ports with Carbon Wave Matrix Construction adding increased stability and an enhanced sweetspot. Though it has the size and mobile feel of a game improvement frame, this one performs more to the standards of a 'tweener with a controlled power. Nicely placed between the Ozone One and Seven, the Four is ideal for those that may find the One too powerful, while the Seven being not enough. We found the Four to offer plenty of power yet also be very accessible to spin resulting in more controllable shot making. A dampened and forgiving stringbed with a large sweetspot makes it easier hit shots from all areas of the court. Stability as well as maneuverability come to the forefront at net. The Four only adds confidence when approaching for a volley. Offering more than enough power when serving, this racquet still provides consistency and access to spin. A nice offering for those looking to add a bit more power to their game. Best suited for 2.5-4.0 players.