Lightning Dock Connector: The 7th generation nano uses Apple's Lightning dock connector for syncing with computers, the same small port used on the iPhone 5 and up.

Bluetooth: Connecting to wireless headphones and speakers is supported on the 7th generation model, using this close-range wireless technology.

FM Tuner: The 5th, 6th, and 7th generation models sport an FM radio tuner that allows users to listen to and record radio, as well as tag favorite songs to buy later.

Accelerometer: The 4th, 5th, and 7th generation nanos include an accelerometer like in the iPhone and iPod touch that allows the display to automatically re-orient itself based on how the nano is held (you can also manually rotate the screen).

Memory: The iPod nano uses solid-state Flash memory to store music, video, and other data.

Like the iPhone and iPad, it's a multitouch screen. nano has a touchscreen (no more Click wheel on any nano models).

Screen: A 2.5-inch, rectangular multitouch screen.

It also restored video playback and added support for Bluetooth headphones and bluetooth speakers. The 7th generation model added a big touchscreen and a home button, making it look like a shrunken iPod touch.

7th Generation iPod nano: Another major redesign, also the last iPod nano model.

This model added a multitouch screen, removed video playback and the video camera, and changed how you use the nano in ways some users didn't like.

6th Generation iPod nano: A major redesign in shape and functionality.

5th Generation iPod nano: The same form factor as the 4th generation model, but it added a video camera and FM radio tuner to create a versatile, capable iPod. Also known as Apple model number A1320.

4th Generation iPod nano: A return to the vertical form factor, with capacity raised to 16 GB at the high-end, and nine brightly colored models.3rd Generation iPod nano: A big change to the nano thanks to its squat form factor and video playback.2nd Generation iPod nano: This model doubled storage capacity - 2 GB, 4 GB, and 8 GB - and brought bright case colors to the nano line. Also known as Apple model number A1199.1st Generation iPod nano: The original model offered a small color screen and 1 GB, 2 GB, and 4 GB storage capacity for audio.

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