Compare Kindles

Kindle 4	Kindle Touch Kindle Touch 3G	Kindle Keyboard Kindle Keyboard 3G	Kindle DX	Kindle Fire
6,100	7,000   9,0000	Not Available	Not Available	11,200
Connectivity
Wi-Fi	Wi-Fi Free 3G + Wi-Fi	Wi-Fi Free 3G + Wi-Fi	Free 3G	Wi-Fi
Content
Millions of books, newspapers, magazines, games, and docs	Millions of books, newspapers, magazines, audiobooks, games, and docs	Millions of books, newspapers, magazines, audiobooks, games, and docs	Millions of books, newspapers, magazines, audiobooks, games, and docs	19 million movies, TV shows, apps, games, songs, books, newspapers, audiobooks, magazines, and docs
Web
Experimental browser	Experimental browser	Experimental browser	Experimental browser	Amazon Silk cloud-accelerated browser
Display
6" E Ink Pearl	6" E Ink Pearl	6" E Ink Pearl	9.7" E Ink Pearl	7" Vibrant Color IPS
Battery Life, Wireless Off
1 month	2 months	2 months	3 weeks	8 hours continuous reading or 7.5 hours video playback
Storage
2GB on device for 1,400 books Plus free cloud storage for all Amazon content so you never have to worry about running out of space	4GB on device for 3,000 books Plus free cloud storage for all Amazon content so you never have to worry about running out of space	4GB on device for 3,500 books Plus free cloud storage for all Amazon content so you never have to worry about running out of space	4GB on device for 3,500 books Plus free cloud storage for all Amazon content so you never have to worry about running out of space	8GB on device for 80 apps plus either 10 movies or 800 songs or 6,000 books Plus free cloud storage for all Amazon content so you never have to worry about running out of space
Dimensions
6.5" x 4.5" x 0.34"	6.8" x 4.7" x 0.40"	7.5" x 4.8" x 0.34"	10.4" x 7.2" x 0.38"	7.5" x 4.7" x 0.45"
Weight
5.98 ounces	7.5 ounces 7.8 ounces	8.5 ounces 8.7 ounces	18.9 ounces	14.6 ounces
Interface
5-way controller	multi-touch	keyboard	keyboard	multi-touch