<P> The Apple iPod line has been upgraded many times, and each significant revision is called a "generation". Only the most recent generation and refurbished units of previous generations of the iPod line are available from Apple for each model (classic, nano, shuffle, touch). Each new generation usually has more features and refinements while typically being physically smaller and lighter than its predecessor, while usually (but not always) retaining the older model's price tag . Notable changes include the touch - sensitive click wheel replacing the mechanical scroll wheel, use of color displays, and flash memory replacing hard disks . </P> <Table> <Tr> <Th> Model </Th> <Th> Generation </Th> <Th> Image </Th> <Th> Capacity </Th> <Th> Connection </Th> <Th> Original release date </Th> <Th> Minimum OS to sync </Th> <Th_colspan="3"> Rated battery life (hours) </Th> </Tr> <Tr> <Th> Classic </Th> <Th> 1st </Th> <Td> </Td> <Td> 5, 10 GB </Td> <Td> FireWire </Td> <Td> October 23, 2001 </Td> <Td> Mac: 9, 10.1 </Td> <Td_colspan="3"> audio: 10 </Td> </Tr> <Tr> <Td_colspan="9"> First model, with mechanical scroll wheel . 10 GB model released later . </Td> </Tr> <Tr> <Th> 2nd </Th> <Td> </Td> <Td> 10, 20 GB </Td> <Td> FireWire </Td> <Td> July 17, 2002 </Td> <Td> Mac: 10.1 Win: 2000 </Td> <Td_colspan="3"> audio: 10 </Td> </Tr> <Tr> <Td_colspan="9"> Touch - sensitive wheel . FireWire port had a cover . Hold switch revised . Windows compatibility through Musicmatch . </Td> </Tr> <Tr> <Th> 3rd </Th> <Td> </Td> <Td> 10, 15, 20, 30, 40 GB </Td> <Td> FireWire (USB for syncing only) </Td> <Td> April 28, 2003 </Td> <Td> Mac: 10.1 Win: 2000 </Td> <Td_colspan="3"> audio: 8 </Td> </Tr> <Tr> <Td_colspan="9"> First complete redesign with all - touch interface, dock connector, and slimmer case . Musicmatch support dropped with later release of iTunes 4.1 for Windows . </Td> </Tr> <Tr> <Th> 4th (Photo) (Color) </Th> <Td> </Td> <Td> 20, 40 GB </Td> <Td> FireWire or USB </Td> <Td> July 19, 2004 </Td> <Td> Mac: 10.2 Win: 2000 </Td> <Td_colspan="3"> audio: 12 </Td> </Tr> <Tr> <Td_colspan="9"> Adopted Click Wheel from iPod Mini, hold switch redesigned . </Td> </Tr> <Tr> <Td> </Td> <Td> photo: 30, 40, 60 GB </Td> <Td> FireWire or USB </Td> <Td> October 26, 2004 </Td> <Td> Mac: 10.2 Win: 2000 </Td> <Td_colspan="3;"> audio: 15 slideshow: 5 </Td> </Tr> <Tr> <Td> color: 20, 60 GB </Td> <Td> June 28, 2005 </Td> </Tr> <Tr> <Td_colspan="9"> Premium spin - off of 4th generation iPod With Color Screen, plus picture viewing . Later reintegrated into main iPod line . </Td> </Tr> <Tr> <Th> 5th </Th> <Td> </Td> <Td> 30, 60, 80 GB </Td> <Td> USB (FireWire for charging only) </Td> <Td> October 12, 2005 </Td> <Td> Mac: 10.3 Win: 2000 </Td> <Td_colspan="2"> 30 GB audio: 14 video: 2 (later 3.5) </Td> <Td> 60 / 80 GB audio: 20 video: 3 / 6.5 </Td> </Tr> <Tr> <Td_colspan="9"> Second full redesign with a slimmer case, and larger screen with video playback . Offered in black or white . Hardware and firmware updated with 60 GB model replaced with 80 GB model on September 12, 2006 . </Td> </Tr> <Tr> <Th> 6th </Th> <Td> </Td> <Td> 80, 120, 160 GB </Td> <Td> USB (FireWire for charging only) </Td> <Td> September 5, 2007 </Td> <Td> Mac: 10.4 Win: XP </Td> <Td> 80 GB audio: 30 video: 5 </Td> <Td> 120 GB audio: 36 video: 6 </Td> <Td> 160 GB 2007 model audio: 40 video: 7 2009 model audio: 36 video: 6 </Td> </Tr> <Tr> <Td_colspan="9"> Introduced the "Classic" suffix . New interface and anodized aluminum front plate . Silver replaces white . In September 2008 the hardware and firmware was updated with a 120 GB model replacing the 80 GB model and the 160 GB model was discontinued . In September 2009, the 120 GB model was replaced with a 160 GB model . Discontinued on September 9, 2014 . </Td> </Tr> <Tr> <Th> Mini </Th> <Th> 1st </Th> <Td> </Td> <Td> 4 GB </Td> <Td> USB or FireWire </Td> <Td> January 6, 2004 </Td> <Td> Mac: 10.1 Win: 2000 </Td> <Td_colspan="3"> audio: 8 </Td> </Tr> <Tr> <Td_colspan="9"> New smaller model, available in 5 colors . Introduced the "Click Wheel". </Td> </Tr> <Tr> <Th> 2nd </Th> <Td> </Td> <Td> 4, 6 GB </Td> <Td> USB or FireWire </Td> <Td> February 22, 2005 </Td> <Td> Mac: 10.2 Win: 2000 </Td> <Td_colspan="3"> audio: 18 </Td> </Tr> <Tr> <Td_colspan="9"> Brighter color variants with longer battery life . Click Wheel lettering matched body color . Gold color discontinued . Later replaced by iPod Nano . </Td> </Tr> <Tr> <Th> Nano </Th> <Th> 1st </Th> <Td> </Td> <Td> 1, 2, 4 GB </Td> <Td> USB (FireWire for charging only) </Td> <Td> September 7, 2005 </Td> <Td> Mac: 10.3 Win: 2000 </Td> <Td_colspan="3"> audio: 14 slideshow: 4 </Td> </Tr> <Tr> <Td_colspan="9"> Replaced Mini . Available in black or white and used flash memory . Color screen for picture viewing . 1 GB version released later . </Td> </Tr> <Tr> <Th> 2nd </Th> <Td> </Td> <Td> 2, 4, 8 GB </Td> <Td> USB (FireWire for charging only) </Td> <Td> September 12, 2006 </Td> <Td> Mac: 10.3 Win: 2000 </Td> <Td_colspan="3"> audio: 24 slideshow: 5 </Td> </Tr> <Tr> <Td_colspan="9"> Anodized aluminum casing and 6 colors available . </Td> </Tr> <Tr> <Th> 3rd </Th> <Td> </Td> <Td> 4, 8 GB </Td> <Td> USB (FireWire for charging only) </Td> <Td> September 5, 2007 </Td> <Td> Mac: 10.4 Win: XP </Td> <Td_colspan="3"> audio: 24 video: 5 </Td> </Tr> <Tr> <Td_colspan="9"> 2" QVGA screen, colors refreshed with chrome back, new interface, video capability, smaller Click Wheel . </Td> </Tr> <Tr> <Th> 4th </Th> <Td> </Td> <Td> 4, 8, 16 GB </Td> <Td> USB </Td> <Td> September 9, 2008 </Td> <Td> Mac: 10.4 Win: XP </Td> <Td_colspan="3"> audio: 24 video: 4 </Td> </Tr> <Tr> <Td_colspan="9"> Revert to tall form and all - aluminum enclosure with nine color choices, added accelerometer for shake and horizontal viewing . 4 GB model limited release in select markets . </Td> </Tr> <Tr> <Th> 5th </Th> <Td> </Td> <Td> 8, 16 GB </Td> <Td> USB </Td> <Td> September 9, 2009 </Td> <Td> Mac: 10.4 Win: XP </Td> <Td_colspan="3"> audio: 24 video: 5 </Td> </Tr> <Tr> <Td_colspan="9"> First iPod to include a video camera; also included a larger screen, FM radio, speaker, pedometer, and a polished exterior case while retaining the similar colors as the 4th generation model . </Td> </Tr> <Tr> <Th> 6th </Th> <Td> </Td> <Td> 8, 16 GB </Td> <Td> USB </Td> <Td> September 1, 2010 </Td> <Td> Mac: 10.5 Win: XP </Td> <Td_colspan="3"> audio: 24 </Td> </Tr> <Tr> <Td_colspan="9"> First iPod Nano to include multi-touch screen; clip from iPod Shuffle added . Video playback, speakers and camera removed . </Td> </Tr> <Tr> <Th> 7th </Th> <Td> </Td> <Td> 16 GB </Td> <Td> USB </Td> <Td> September 12, 2012 </Td> <Td> Mac: 10.6 Win: XP </Td> <Td_colspan="3"> audio: 30 video: 3.5 </Td> </Tr> <Tr> <Td_colspan="9"> Revert to tall form factor with larger 2.5" multi-touch screen . Clip removed . Video playback restored and Bluetooth added . Discontinued July 27, 2017 </Td> </Tr> <Tr> <Th> Shuffle </Th> <Th> 1st </Th> <Td> </Td> <Td> 512 MB, 1 GB </Td> <Td> USB (no adaptor required) </Td> <Td> January 11, 2005 </Td> <Td> Mac: 10.2 Win: 2000 </Td> <Td_colspan="3"> audio: 12 </Td> </Tr> <Tr> <Td_colspan="9"> New entry - level model . Uses flash memory and has no screen . </Td> </Tr> <Tr> <Th> 2nd </Th> <Td> </Td> <Td> 1, 2 GB </Td> <Td> USB </Td> <Td> September 12, 2006 </Td> <Td> Mac: 10.3 Win: 2000 </Td> <Td_colspan="3"> audio: 12 </Td> </Tr> <Tr> <Td_colspan="9"> Smaller clip design with anodized aluminum casing. 4 color options added later . Colors were later refreshed twice . </Td> </Tr> <Tr> <Th> 3rd </Th> <Td> </Td> <Td> 2, 4 GB </Td> <Td> USB </Td> <Td> March 11, 2009 </Td> <Td> Mac: 10.4 Win: XP </Td> <Td_colspan="3"> audio: 10 </Td> </Tr> <Tr> <Td_colspan="9"> Smaller design with controls relocated to right earbud cable . Introduced with two colors, and features VoiceOver . More colors and 2 GB model added in September 2009 . </Td> </Tr> <Tr> <Th> 4th </Th> <Td> </Td> <Td> 2 GB </Td> <Td> USB </Td> <Td> September 1, 2010 </Td> <Td> Mac: 10.5 Win: XP </Td> <Td_colspan="3"> audio: 15 </Td> </Tr> <Tr> <Td_colspan="9"> Controls returned to the body of the iPod . Introduced with five colors, and features VoiceOver . Discontinued July 27, 2017 </Td> </Tr> <Tr> <Th> Touch </Th> <Th> 1st </Th> <Td> </Td> <Td> 8, 16, 32 GB </Td> <Td> USB (FireWire for charging only) </Td> <Td> September 5, 2007 </Td> <Td> Mac: 10.4 Win: XP </Td> <Td_colspan="3"> audio: 22 video: 5 </Td> </Tr> <Tr> <Td_colspan="9"> First iPod with Wi - Fi and a Multi-touch interface . Features Safari browser and wireless access to the iTunes Store and YouTube . 32 GB model later added . iOS 2.0 and App Store access requires an upgrade fee . </Td> </Tr> <Tr> <Th> 2nd </Th> <Td> </Td> <Td> 8, 16, 32 GB </Td> <Td> USB </Td> <Td> September 9, 2008 </Td> <Td> Mac: 10.4 Win: XP </Td> <Td_colspan="3"> audio: 36 video: 6 </Td> </Tr> <Tr> <Td_colspan="9"> New tapered chrome back with Nike+ functionality, volume buttons, and built - in speaker added . iOS 2.0 and App Store access standard . Bluetooth support added but not made active until iOS 3.0, which requires an upgrade fee . </Td> </Tr> <Tr> <Th> 3rd </Th> <Td> 32, 64 GB </Td> <Td> USB </Td> <Td> September 9, 2009 </Td> <Td> Mac: 10.4 Win: XP </Td> <Td_colspan="3"> audio: 30 video: 6 </Td> </Tr> <Tr> <Td_colspan="9"> Updated to include the upgraded internals from the iPhone 3GS; includes Voice Control support and bundled remote earphones . </Td> </Tr> <Tr> <Th> 4th </Th> <Td> </Td> <Td> 8, 16, 32, 64 GB </Td> <Td> USB </Td> <Td> September 1, 2010 </Td> <Td> Mac: 10.5 Win: XP </Td> <Td_colspan="3"> audio: 40 video: 7 </Td> </Tr> <Tr> <Td_colspan="9"> New thinner design including two cameras for FaceTime and HD video recording, hold button moved to top right corner, Retina Display similar to iPhone 4, Apple A4 chip . White - colored version added on October 4, 2011 . </Td> </Tr> <Tr> <Th> 5th </Th> <Td> </Td> <Td> 16, 32, 64 GB </Td> <Td> USB </Td> <Td> September 12, 2012 </Td> <Td> Mac: 10.6 Win: XP </Td> <Td_colspan="3"> audio: 40 video: 8 </Td> </Tr> <Tr> <Td_colspan="9"> New aluminum design with colored case options . Features improved cameras along with A5 processor, Siri, and longer 4" Retina Display . First 16 GB models released have no color choices and have no iSight camera, In early 2014 16 GB models were released that have iSight cameras and color choices . </Td> </Tr> <Tr> <Th> 6th </Th> <Td> </Td> <Td> 16, 32, 64, 128 GB </Td> <Td> USB </Td> <Td> July 15, 2015 </Td> <Td> Mac: 10.7 Win: 7 </Td> <Td_colspan="3"> audio: 40 video: 8 </Td> </Tr> <Tr> <Td_colspan="9"> Updated with a new lineup of six colors, a new 128 GB model, and improved internals . The improved internals feature new cameras and the A8 processor with M8 motion coprocessor, 1GB of RAM (2X more than the previous generation), and AC Wi - Fi . </Td> </Tr> <Tr> <Td_colspan="12"> Sources: Apple Inc., Mactracker </Td> </Tr> </Table> <Tr> <Th> Model </Th> <Th> Generation </Th> <Th> Image </Th> <Th> Capacity </Th> <Th> Connection </Th> <Th> Original release date </Th> <Th> Minimum OS to sync </Th> <Th_colspan="3"> Rated battery life (hours) </Th> </Tr>

When did 4th generation ipod touch come out