Garmin 310XT Official Site
You can read many details and information about Garmin 310XT in this manufacturer site. Details like product press release, complete features, review and others.
www.garmin.com/garmin/cms/site/au/lang/en/Forerunner_310XT

Garmin 310XT on Wikipedia
Here on Wikipedia you can found the complete list of Garmin Forerunner Fiteness Series including Garmin 310XT.
http://en.wikipedia.org/wiki/Garmin_Forerunner