Apple first introduced the iPod back in 2001, and since then this single versatile device has grown into an entire family of digital music and video players. The original iPod was the "first generation" model. Subsequent versions have been referred to as "second generation" (2G), "third generation" (3G), and so on.

Once memory capacity started being measured in gigabytes — abbreviated "GB" — determining which iPod you had could be confusing. For example, you might have a 4G 20GB iPod, or a 2G 4GB iPod shuffle.

So we've created this handy chart to help you identify exactly which iPod you have. We've also included the descriptions we often use on our website to further help you match generation number to model.

iPod	Generation	Apple's designation	Crutchfield's designation	Memory capacity	When available on market
	1G	iPod	n/a	5GB, 10GB	October 2001 - March, 2003
	2G	iPod	n/a	10GB, 20GB	June, 2002 - March, 2003
	3G (first docking iPod)	iPod	iPod	10GB, 15GB, 20GB, 30GB, 40GB	April, 2003 - June, 2004
	3G (first docking iPod)	iPod	Click Wheel iPod	20GB, 40GB	July, 2004 - June, 2005
	4G version with image display	iPod photo	iPod photo	30GB, 40GB, 60GB	October, 2004 - June, 2005
	4G version with color screen	iPod photo	iPod photo	20GB, 60GB	June, 2005 - September, 2005
	5G	iPod	iPod video	30GB, 60GB, 80GB	October, 2005 - September, 2007
	6G	iPod classic	iPod classic	80GB, 120GB, 160GB	September, 2007 - present

iPod mini	Generation	Apple's designation	Crutchfield's designation	Memory capacity	When available on market
	1G	iPod mini	iPod mini	4GB	January, 2004 - February, 2005
	2G	iPod mini	iPod mini	4GB, 6GB	February, 2005 - August, 2006

iPod nano	Generation	Apple's designation	Crutchfield's designation	Memory capacity	When available on market
	1G	iPod nano	iPod nano	1GB, 2GB, 4GB	September, 2005 - September, 2006
	2G	iPod nano	aluminum-finish iPod nano	2GB, 4GB, 8GB	September,2006 - September 2007
	3G	iPod nano	video-playing iPod nano	4GB, 8GB	September, 2007 - present
	4G	iPod nano	curved screen iPod nano	8GB, 16GB	September, 2007 - present

iPod shuffle	Generation	Apple's designation	Crutchfield's designation	Memory capacity	When available on market
	1G	iPod shuffle	iPod shuffle	512MB, 1GB	January, 2005 - September, 2006
	2G	iPod shuffle	iPod shuffle	1GB, 2GB	January, 2006 - present

iPod touch	Generation	Apple's designation	Crutchfield's designation	Memory capacity	When available on market
	1G	iPod touch	iPod touch	8GB, 16GB, 32GB	September, 2007 - September, 2008
	2G	iPod touch	second generation iPod touch	8GB, 16GB, 32GB	September, 2008 - present