First Here are the specs:
Head Size: 90 sq. in. / 581 sq. cm
Length: 27 in. / 69 cm
Strung Weight: 12.5 oz / 354 g
Unstrung Weight: 12 oz / 340 g
Balance 9pts Head Light (8pts = 1 inch from mid point) Strung, 12pts Head Light Unstrung
Stiffness: 67
Beam Width: 18mm
Composition: 80% Karophite Black / 20% Kevlar
Sprint Pattern: 16 Mains / 19 Crosses
String Tension 50-60 lbs.
The Asian model has some different specs:
Unstrung Weight: 12 oz / 340 g
Double check racquet specs.
Check balance of the racquet by hanging the racquet with a pen placed through the throat of the racquet.
The lines of the paint should be clean.
There should be a red dot marking the center of the frame at the top inside of the head next to the letter C.
The plastic grommet should evenly come out of the holes.
This racquet does not come prestung prestrung.
This racquet does not come with a cover.
After the Wilson butt cap is popped off, you should see 2 ovals filled with yellowish materials, it should not be hollow.
There should be a small sticker indicating the grip size.
With the Wilson butt cap in the upright position the Roger Federer signature should be on the left side of the racquet.
The vibration damper that comes with the racquet should be two colors and not clear. It should also be sealed to the grip.
Here are some variations depending on new and older models. Please note that the old versions have various editions and could have only some of the things listed.
New
The paper that covers the inside of the racquet head (card inserts) is two pieces not one.
The "Made is China" is below the "Designed in the USA" sign
Holograms are painted on.
Have (K)arophite Black printed
Old
The paper that covers the inside of the racquet head (card inserts) is one piece.
The "Made in China" sign is at the bottom of the head
Holograms can be peeled back to reveal not for resale sign.
Have (K)arbon printed
