iPod is a line of portable media players created and marketed by Apple Inc. The product line-up currently consists of the hard drive-based iPod Classic, the touchscreen iPod Touch, the compact iPod Nano, and the ultra-compact iPod Shuffle. iPod Classic models store media on an internal hard drive, while all other models use flash memory to enable their smaller size (the discontinued Mini used a Microdrive miniature hard drive). As with many other digital music players, iPods can also serve as external data storage devices. Storage capacity varies by model, ranging from 2 GB for the iPod Shuffle to 160 GB for the iPod Classic. The iPod line was announced by Apple on October 23, 2001, and released on November 10, 2001. All of the models have been redesigned multiple times since their introduction. The most recent iPod redesigns were introduced on September 1, 2010. Apple's iTunes software can be used to transfer music to the devices from computers using certain versions of Apple Macintosh and Microsoft Windows operating systems.[2] For users who choose not to use iTunes or whose computers cannot run iTunes, several open source alternatives are available for the iPod.[3] iTunes and its alternatives may also transfer photos, videos, games, contact information, e-mail settings, Web bookmarks, and calendars to iPod models supporting those features.
For iOS versions prior to iOS 5, the iPod branding is also used for the media player applications included with the iPhone and iPad; the iPhone version is essentially a combination of the Music and Videos apps on the iPod Touch. (As of iOS 5, separate apps named 'Music' and 'Video' are to be standardized across all iOS-powered products.[4]) In either event, the iPhone and iPad have essentially the same media-player capabilities as the iPod line, but they are generally treated as separate products.
Discontinued models of the line include the iPod Mini and the iPod Photo, the former being replaced by the iPod Nano, and the latter reintegrated into the main iPod line (now the iPod Classic).
Models
While the suffix "Classic" was not introduced until the sixth generation, it has been applied here retroactively to all generic iPods for clarity.
| Model | Generation | Image | Capacity | Connection | Original release date | Minimum OS to sync | Rated battery life (hours) | ||
|---|---|---|---|---|---|---|---|---|---|
| Classic | first |  | 5, 10 GB | FireWire | 23 October 2001 | Mac: 9, 10.1 | audio: 10 | ||
| First model, with mechanical scroll wheel. 10 GB model released later. | |||||||||
| second |  | 10, 20 GB | FireWire | 17 July 2002 | Mac: 10.1 Win: 2000 | audio: 10 | |||
| Touch-sensitive wheel. FireWire port had a cover. Hold switch revised. Windows compatibility through Musicmatch. | |||||||||
| third |  | 10, 15, 20, 30, 40 GB | FireWire (USB for syncing only) | 28 April 2003 | Mac: 10.1 Win: 2000 | audio: 8 | |||
| First complete redesign with all-touch interface, dock connector, and slimmer case. Musicmatch support dropped with later release of iTunes 4.1 for Windows. | |||||||||
| fourth (Photo) (Color) |  | 20, 40 GB | FireWire or USB | 19 July 2004 | Mac: 10.2 Win: 2000 | audio: 12 | |||
| Adopted Click Wheel from iPod Mini, hold switch redesigned. | |||||||||
 | photo: 30, 40, 60 GB | FireWire or USB | 26 October 2004 | Mac: 10.2 Win: 2000 | audio: 15 slideshow: 5 | ||||
| color: 20, 60 GB | 28 June 2005 | ||||||||
| Premium spin-off of 4G iPod with color screen and picture viewing. Later re-integrated into main iPod line. | |||||||||
| fifth |  | 30, 60, 80 GB | USB (FireWire for charging only) | 12 October 2005 | Mac: 10.3 Win: 2000 | 30 GB audio: 14 video: 2 (later 3.5) | 60/80 GB audio: 20 video: 3/6.5 | ||
| 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 12 September 2006. | |||||||||
| sixth |  | 80, 120, 160 GB | USB (FireWire for charging only) | 5 September 2007 | Mac: 10.4 Win: XP | 80 GB audio: 30 video: 5 | 120 GB audio: 36 video: 6 | 160 GB 2007 model audio: 40 video: 7 2009 model audio: 36 video: 6 | |
| 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 120GB model was replaced with a 160GB model. | |||||||||
| Mini | first |  | 4 GB | USB or FireWire | 6 January 2004 | Mac: 10.1 Win: 2000 | audio: 8 | ||
| New smaller model, available in 5 colors. Introduced the "Click Wheel". | |||||||||
| second |  | 4, 6 GB | USB or FireWire | 22 February 2005 | Mac: 10.2 Win: 2000 | audio: 18 | |||
| Brighter color variants with longer battery life. Click Wheel lettering matched body color. Gold color discontinued. Later replaced by iPod Nano. | |||||||||
| Nano | first |  | 1, 2, 4 GB | USB (FireWire for charging only) | 7 September 2005 | Mac: 10.3 Win: 2000 | audio: 14 slideshow: 4 | ||
| Replaced Mini. Available in black or white and used flash memory. Color screen for picture viewing. 1 GB version released later. | |||||||||
| second |  | 2, 4, 8 GB | USB (FireWire for charging only) | 12 September 2006 | Mac: 10.3 Win: 2000 | audio: 24 slideshow: 5 | |||
| Anodized aluminum casing and 6 colors available. | |||||||||
| third |  | 4, 8 GB | USB (FireWire for charging only) | 5 September 2007 | Mac: 10.4 Win: XP | audio: 24 video: 5 | |||
| 2" QVGA screen, colors refreshed with chrome back, new interface, video capability, smaller Click Wheel. | |||||||||
| fourth |  | 4, 8, 16 GB | USB | 9 September 2008 | Mac: 10.4 Win: XP | audio: 24 video: 4 | |||
| Revert to tall form and all-aluminum enclosure with 9 color choices, added accelerometer for shake and horizontal viewing. 4 GB model limited release in select markets. | |||||||||
| fifth |  | 8, 16 GB | USB | 9 September 2009 | Mac: 10.4 Win: XP | audio: 24 video: 5 | |||
| First iPod to include a video camera; also included a larger screen, an FM radio, a speaker, a pedometer, and a polished exterior case while retaining the similar colors as the fourth generation model. | |||||||||
| sixth |  | 8, 16 GB | USB | 1 September 2010 | Mac: 10.5 Win: XP | audio: 24 | |||
| First iPod nano to include multi-touch screen; clip from iPod shuffle added. Video playback, speakers and camera removed. | |||||||||
| Shuffle | first |  | 512 MB, 1 GB | USB (no adaptor required) | 11 January 2005 | Mac: 10.2 Win: 2000 | audio: 12 | ||
| New entry-level model. Uses flash memory and has no screen. | |||||||||
| second |  | 1, 2 GB | USB | 12 September 2006 | Mac: 10.3 Win: 2000 | audio: 12 | |||
| Smaller clip design with anodized aluminum casing. 4 color options added later. Colors were later refreshed twice. | |||||||||
| third |  | 2, 4 GB | USB | 11 March 2009 | Mac: 10.4 Win: XP | audio: 10 | |||
| Smaller design with controls relocated to right earbud cable. Introduced with two colors, and features VoiceOver. More colors and 2GB model added in September 2009. | |||||||||
| fourth |  | 2 GB | USB | 1 September 2010 | Mac: 10.5 Win: XP | audio: 15 | |||
| Controls returned to the body of the iPod. Introduced with five colors, and features VoiceOver. | |||||||||
| Touch | first |  | 8, 16, 32 GB | USB (FireWire for charging only)[50] | 5 September 2007 | Mac: 10.4 Win: XP | audio: 22 video: 5 | ||
| 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. | |||||||||
| second |  | 8, 16, 32 GB | USB | 9 September 2008 | Mac: 10.4 Win: XP | audio: 36 video: 6 | |||
| 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. | |||||||||
| third | 32, 64 GB | USB | 9 September 2009 | Mac: 10.4 Win: XP | audio: 30 video: 6 | ||||
| Updated to include the upgraded internals from the iPhone 3GS; includes Voice Control support and bundled remote earphones. | |||||||||
| fourth |  | 8, 32, 64 GB | USB | 9 September 2010 | Mac: 10.5 Win: XP | audio: 40 video: 7 | |||
| 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 4 October 2011. | |||||||||
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