The 48cm is next to the stock Obitsu 50cm.
The fullset hands, which are shaped as the stock hands but molded in black vinyl to represent gloves, have been replace. The fullset anime head is a whopping 22.5cm compared to the Haruka's 20cm. The Azone fullset also comes with the small bust and the new ankles.
The 48cm's height to the top of the neck vinyl is 42.3cm, compared to the 50cm's 45.7cm.
From what I can tell, the height differential between the 48cm and the 50cm comes entirely from the legs. The thighs on the 48cm appear to be almost 1cm shorter and the calves/feet almost 2cm shorter. The arms and torso appear to be the same parts.
Here are the new and old ankles.
The skeletal part below the ankle ball is several millimeters shorter than it's older counterpart. This seats the ankle ball farther into the foot vinyl and realistically, closer to where the ankle actually should be. The new Obitsu ankles are available on the Obitsu Shop site, retailing for 2079yen. On the Obitsu Blog instructions are given for installing the new ankle using the old foot vinyl. From what I can tell, the foot vinyl for the new ankle is the same as the old, just trimmed a bit shorter.
http://obitsu.blog17.fc2.com/
