The new iPhone 3G has been around for a while now (since July).  The accessories for the 3g iPhone are plentiful and the iPhone owner can find an accessory to fit just about any need.  There are accessories that cover the following:

• iPhone cases,
• batteries,
• headphone adapters
• car chargers
• wireless bluetooth headsets 
• FM transmitter kits
• stereo cable
• portable speakers

Apple computer makes many of the accessories, but there are also a lot of 3rd party companies that make iPhone accessories as well.  One common type of accessory is the wireless headsets using bluetooth technology.  These headsets provide hands free speaking with the iPhone.  The most popular bluetooth headphone manufactures include:

• Motorola
• Jabra
• Blueant

Other accessories that are popular with the iPhone are cases to carry the iPhone.  Leather cases are a popular type with many iPhone owners.  Leather iPhone 3g Cases come in all colors, shapes and styles and add a level of protection for your iPhone. 

• fast 3G wireless technology - fast access to the Internet and email over cellular networks around the world
• support for enterprise features like Microsoft Exchange - It supports Microsoft Exchange ActiveSync, delivering push email, calendar, and contacts. And it gives mobile users secure access to corporate resources with Cisco IPSec VPN and wireless network services with WPA2 Enterprise and 802.1X authentication.
• best email on a mobile device - email looks and acts like email on your computer
• up to the minute calendar - push calendar and integrated support for time zones means users can stay up to date no matter where their business takes them
• more powerful contacts - seamless integration with features such as Maps, Safari, and SMS
• desktop-like web browsing
• enterprise applications
• access to the new App Store - The App Store on iPhone works over cellular networks and Wi-Fi, which means it’s accessible from just about anywhere. Buy an application from the App Store and you always have access to the latest version.
• GPS mapping - Find your location, get directions, and see traffic — all from your phone
• Google Maps on iPhone - switch between views of map data, satellite images, hybrid view, or street view