The main feature of the Treo 90 is it's color screen. The CSTN technology is 12 bit, 160x160 pixel resolution, and can display over 4000 colors. The Treo 90 has a built in Lithium-Ion battery that will last for about 10 days.
The Treo 90 is light in weight at only 4 oz. It is interesting to note that with this new PDA Handspring has scraped their Springboard technology. The Springboard was the technology that separated Handspring from other PDA makers but it did not catch on like Handspring had hoped. Instead, Handpsring has opted for the SD/MMC. This slot allows the Treo 90 to use all SD software cards available on the market, plus standard memory cards.
The Treo 90 has a removable flip lid. It comes with a USB cable, and travel charger.