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| Price | $249.99 | $128.88 | $349.99 | $599.95 | Check Prices |
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| Release date | October 01, 2003 | April 28, 2004 | October 12, 2005 | April 13, 2005 | April 28, 2004 |
| The Bottom Line | Palm's entry-level handheld now has more memory and a faster processor. | The entry-level Palm Zire 31 should have users singing a happy tune with an affordable price tag, added memory, a fast processor, and MP3 playback. | The Palm Z22 provides an affordable, very basic, and easy-to-use PDA suitable for first-time buyers and technophobes. | The Palm Tungsten E2 delivers the sleek and affordable combination of productivity and entertainment in a package that should satisfy mobile professionals and consumers alike. | If you can live without Wi-Fi, the midpriced Palm Zire 72 is a well-rounded PDA with features suited for both work and play. |
| Similar Products | Compare more products | Compare more products | Compare more products | Compare more products | Compare more products |
| Features | |||||
| Packaged contents | Protective cover | Protective cover | USB cable | Protective cover | Carrying case |
| RAM installed size | 8 MB | 16 MB | 32 MB | 32 MB | 32 MB |
| OS provided | Palm OS 5.2.1 | Palm OS 5.2.8 | Palm OS Garnet 5.4 | Palm OS Garnet 5.4 | Palm OS 5.2.8 |
| Color support | 4-bit (16 gray levels) | 16-bit (64K colors) | Info unavailable | 16-bit (64K colors) | 16-bit (64K colors) |
| Clock speed | 126 MHz | 200 MHz | 200 MHz | 200 MHz | 312 MHz |
| Weight | 3.8 oz | 4.1 oz | 3.4 oz | 4.7 oz | 4.8 oz |
| Height | 4.4 in | 4.4 in | 4.1 in | 4.5 in | 4.6 in |
| Input device type | Stylus Touch-screen | Stylus Touch-screen 5-way navigation button | Stylus Touch-screen 5-way navigation button | Stylus Touch-screen 5-way navigation button | Stylus Touch-screen 5-way navigation button |
| Connectivity device(s) included | Info unavailable | Docking cradle | Info unavailable | Info unavailable | None |
| Wireless connectivity | IrDA | IrDA | IrDA | IrDA Bluetooth | IrDA Bluetooth |
| Built-in devices | Display | Display | Display Speaker | Display | Camera Display |
| Full specifications | Full specifications | Full specifications | Full specifications | Full specifications | Full specifications |
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Palm Zire 21 Handheld comparison
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