1) Navigation software with handwriting and TTS functions
2) Navigation maps by Beijing SiWei Company--the latest navigation map since Fall of 2008.
3) Best quality framework: International brand-Sirf III GPS receiver
Providing high sensitive, fast speed, and accurate positioning for
iPhone 2G, 3G and I-Pod Touch since it does not have any or enough navigating
Functionality.
4) Power Management: Recharge continues when navigation function is
Used and therefore, it will not drain iPhone's power.
5) Volume Management: Built-in speakers (in pair) can solve the low
Volume problem for iPhone 2G and I-Pod Touch as well as improve volume
Output for iPhone 3G
6) Car power adapter and Installation CD in each package.