• The Garmin Nuvi 680 can reroute you to avoid traffic.Traffic light image by Tasha from Fotolia.com
  
  The Garmin Nuvi 680 is a personal navigation system for your car. It was discontinued by Garmin, but you can still buy the 680 on websites like Amazon and Ebay. The Garmin Nuvi 680 has a number of trademarked programs and features that come loaded on the system to make driving and navigation simpler.
  
  

Auto Re-Route

• The Garmin Nuvi 680 boasts quick calculation of routes, so if you happen to go off the recommended route, the Garmin will quickly recalculate a detour.
  
  

Bluetooth

• The 680 has Bluetooth wireless technology.
  
  

MSN Direct

• The 680 is compatible with MSN Direct, which offers traffic and weather information, gas prices, movie times and other information. If you receive information that you are driving into an area with a lot of traffic, the 680 will reroute you so that you avoid the traffic.
  
  

Garmin Garage

• The Garmin Garage feature allows you to download car-shaped icons to your 680, so that the vehicles on the map will be accurate.
  
  

Garmin Lock

• Garmin Lock is the 680's security program. It is an anti-theft feature that allows you to create a four-digit pin number and security location, so that you must input the number or be at the security location to access the device.
  
  

Audio Programs

• The 680 allows you to utilize many audio features. You can play audio books through it or listen to MP3s. There is also an FM transmitter and a headphone jack.