Panasonic Hdc Sd9 Howto Pls Let Me Know The Difference Between Panasonic HDC-SD9 And....?

Pls let me know the difference between Panasonic HDC-SD9 and....? - panasonic hdc sd9 howto

I want to buy Panasonic HDC-SD9 at Amazon.com.
Then I realized, you can buy two types of HDS-SD9 on Amazon.
One is
Panasonic HDC-SD9 AVCHD 3CCD Flash Memory High Definition Camcorder with 10x Optical Zoom
The other
Panasonic HDC-SD9 AVCHD 3CCD Flash Memory High Definition Camcorder with 10x Optical Zoom with w / 8 GB SD Card
If the difference is that there is an SD card?
But the prices are very respectful.
Can a small difference in the camcorder function.
Pls let me know the difference.
Thank you.