The Sharp Netwalker PC-Z1 measures 161.4mm x 108.7mm and is just 19.7mm thick when closed. It weighs only 409g and features a ARM Cortex A8-based Freescale i.MX515 800MHz processor, 512MB RAM memory, 4GB SSD, SDHC memory card slot, 802.11b/g WiFi and a tiny 68-key keyboard. It's not a very powerful system, but due to the low power consumption it should offer up to ten hours of battery life.
The Sharp Netwalker will be avaialble in white, black, and red models. Availability is slated for the end of September in Japan, it's unknown if other parts of the world will get it.
Source: Bit Tech