The Apple iPod touch (2nd generation) has always been an amazing iPod. And with its groundbreaking technologies--including a Multi-Touch screen, the accelerometer, and 3D graphics--and access to hundreds of games, iPod touch puts an amazing gaming experience in the palm of your hand. It comes in 8 GB, 16 GB, and 32 GB models with new volume controls and a built-in speaker. Play hours of music. Create a Genius Playlist of songs that go great together. Watch a movie. Surf the web. View rich HTML email. Find your location and get directions with Google Maps. Browse YouTube videos. And shop the App Store for games and applications.

Carry hours of video with you, and watch it on a crisp, clear 3.5-inch widescreen color display. Need ideas? From Hollywood blockbusters to independent favorites, there's something for everyone at the iTunes Store. Download and watch movies with a few clicks. Prefer TV shows? Buy a single episode or an entire season's worth all at once.

Remember what it felt like to flip through your CD or record collection? Cover Flow brings that feeling back. Just turn iPod touch on its side and flick through your music to find the album you want to hear. Tap the cover to flip it over and display a track list. Tap again to start the music. Even view the lyrics while you're listening.

Developers all over the world are creating exciting games unlike anything you've ever seen on an iPod or mobile device. Many games come alive with stunning 3D graphics and immerse you in the action with the advanced technologies in iPod touch. There's even a built-in speaker, so you can hear all the action.

The built-in wireless capability in iPod touch gives you access to the iTunes Wi-Fi Music Store, where you can choose from millions of songs with a tap. Browse New Releases, What's Hot, and Genres. Take a look at Top Songs and Top Albums. Or find exactly what you're looking for with a quick search. Play a 30-second preview of any song, then tap once to buy it. Your music starts downloading instantly, and you can keep tabs on its progress by tapping the Downloads button.

Whenever you download an application from the App Store, a new icon appears on your Home screen. And if you check the same websites every day, just create Web Clips and you can access the sites directly from your Home screen with a single tap. Not happy with how they're organized? Reorder them any way you want by dragging them around the screen.

iPod touch now includes built-in Nike + iPod support. Just slip the Nike + iPod Sensor (available separately) into your Nike+ shoe and start your run. The sensor communicates wirelessly with your iPod touch, tracking your time, distance, and calories burned. It even gives you voice feedback on your progress.

The accelerometer inside iPod touch uses three elements: a silicon mass, a set of silicon springs, and an electrical current. The silicon springs measure the position of the silicon mass using the electrical current. Rotating iPod touch causes a fluctuation in the electrical current passing through the silicon springs. The accelerometer registers these fluctuations and tells iPod touch to adjust the display accordingly.