Editing IPod Shuffle (section)

===1st generation===
{{More citations needed section|date=September 2018}}
Released on January 11, 2005, during the [[Macworld/iWorld|Macworld]] expo,<ref>{{cite web|url=https://www.apple.com/newsroom/2005/01/11Apple-Introduces-iPod-shuffle/|title=Apple Introduces iPod shuffle|date=11 January 2005|publisher=Press Release}}</ref> the first-generation iPod Shuffle weighed {{convert|0.78|oz}}, resembled a pack of chewing gum sticks,<ref>{{cite web |last1=Rojas |first1=P |title=The iPod shuffle: Do not eat in the US or chew in the UK |url=https://www.engadget.com/2005-01-12-the-ipod-shuffle-do-not-eat-in-the-us-or-chew-in-the-uk.html |website=Engadget |access-date=5 March 2022 |language=en |date=January 12, 2005 |quote=You know how Apple made that weak joke on the product page for iPod shuffle advising that you "Do not eat iPod shuffle"? [...] a reference to the fact that the new player is about the size of pack of gum.}}</ref> and was designed to be easily loaded with a selection of songs and to play them in sequential or random order.

It used the [[SigmaTel]] STMP35xx [[system on a chip]] (SOC) and its software development kit (SDK) v2.6, a flash memory IC, and USB rechargeable lithium cell. The STMP35xx SOC and its software was the most fully integrated portable MP3 playback at release time and SigmaTel was Austin's largest IPO (2003) capturing over 60% of flash based MP3 player world market share in 2004. In 2005, peak iPod first-generation Shuffle production occurred at a hundred thousand units per day, at the [[Asus]] factory.

It lacks a [[liquid crystal display|display]], [[click wheel]], [[playlist]] management features, and the games, address book, calendar, alarm, and notes capability of larger iPods. Due to the codec not being ported, it is incapable of playing [[Apple Lossless]] and [[Audio Interchange File Format|AIFF]] audio files. The iPod Shuffle series also lacks a real-time clock; therefore, it does not update the "Last Played" value in [[iTunes]].<ref name="ipodshufflecompleteguide">{{cite web |last1=H |first1=Jerrod |title=The Complete Guide to the iPod shuffle |url=https://www.ilounge.com/index.php/articles/comments/complete-guide-to-the-ipod-shuffle |archive-url=https://web.archive.org/web/20050803235851/http://www.ilounge.com/index.php/articles/comments/complete-guide-to-the-ipod-shuffle/ |url-status=dead |archive-date=August 3, 2005 |website=iLounge |access-date=5 March 2022 |language=en |date=March 2, 2005 }}</ref>

The 1&nbsp;GB model was advertised as capable of holding up to 240 songs (based on Apple's estimate of four minutes per song and 128 [[kilobit per second|kbit/s]] [[Advanced Audio Coding|AAC]] encoding).
To cater to the limited capacity and intended usage scenario, two new features were added to iTunes: AutoFill, which selects songs at random from a user's music library (or from a specific playlist) and copies as many as would fit into the iPod Shuffle's storage - available as a supplement or replacement to manual selection; and an option to automatically transcode audio files of higher specifications to 128&nbsp;kbit/s AAC-LC while transferring them (which would remain exclusive to the iPod Shuffle series until iTunes 9.1).<ref>{{cite web |last1=Breen |first1=Cristopher |title=iTunes 9.1: What's changed |url=https://www.macworld.com/article/204574/inside_itunes91.html |website=Macworld |access-date=5 March 2022 |language=en |date=March 31, 2010}}</ref>
Furthermore, older versions of iTunes allowed an iPod Shuffle playlist to be viewed and changed while the unit is not connected; changes would be synchronized the next time the unit is connected.<ref name="ipodshufflecompleteguide" /> However, this functionality was removed in iTunes 7.

Due to superior audio technology in the SigmaTel STMP35xx SOC and SDK, the first generation had a better [[Bass (sound)|bass]] response than [[IPod Classic#Fourth generation|a fourth-generation iPod]], according to a review published days after its release.<ref>{{cite web|author=Bill Machrone|date=January 20, 2005|title=Apple iPod Shuffle|url=https://www.pcmag.com/article2/0,1759,1753026,00.asp|url-status=dead|archive-url=https://web.archive.org/web/20050123014514/https://www.pcmag.com/article2/0,1759,1753026,00.asp|archive-date=January 23, 2005|access-date=March 29, 2005|website=[[PC Magazine]]}}</ref><ref>{{cite web|author=Bill Machrone|date=March 16, 2005|title=Shuffle's Got a Secret|url=https://www.pcmag.com/article2/0,2817,1777890,00.asp|access-date=July 27, 2010|website=PC Magazine}}</ref>

[[File:ipod-shuffle-usb-connector.jpg|thumb|left|First-generation iPod Shuffle with the cap removed to show the [[Universal Serial Bus|USB]] connector. The cap snaps onto the unit. The iPod Shuffle comes with a second cap on a [[lanyard]], which a user can wear around their neck.]]

[[File:First generation I iPod Shuffle in its packaging.jpg|thumb|left|First-generation iPod Shuffle in its packaging]]

The front of the iPod Shuffle has buttons for Play/Pause, Next Song/Fast Forward, Previous Song/Fast Reverse, and up and down [[loudness|volume]] adjustment. On the reverse, it features a battery level indicator light (activated by a button) and a three-position switch to turn the unit off or set it to play music in order or shuffled. It plugs directly into a computer's [[Universal Serial Bus|USB]] port (either 1.1 or 2.0), through which it also recharged its battery, which has an expected life of around 12 hours. The USB plug has additional pins for proprietary accessories<ref>{{cite web |title=An iPod shuffle on the inside... |url=http://www.chipmunk.nl/ipod/ipodshuffle-2.html |website=Chipmunk International |access-date=5 March 2022}}</ref> and, when not in use, can be hidden beneath a cap. A second cap, included with the unit, has a lanyard attached which allows the iPod Shuffle to hang around the user's neck.

As both already supported by its larger relatives and suggested by its design, the Shuffle can also be used as a [[USB flash drive]] - a feature further facilitated by the dropping of "Macintosh" ([[HFS Plus]]) format: all Shuffles are formatted to [[File Allocation Table|FAT32]] regardless of the operating system used for restoring them. iTunes also allowed users to reserve part of the capacity for storing files, by limiting the space that would be used for storing music.<ref name="ipodshufflecompleteguide" />