Both the h4100 and h4300 models are built around 400 MHz Intel XScale PXA255 processors, and each sports 64 MB of RAM (55 MB accessible), 2.8 MB of file store (that isn’t a typo, it is two point eight MB, not twenty eight) and a single SDIO slot. Both will also feature dual wireless, Bluetooth and WiFi. The h4100 features a user-swappable 1000 milliamp-hour battery, and the h4300 uses a 1560 mAh battery. Both feature small internal cells to maintain memory while changing batteries. The manual also makes reference to an “extended battery”, but it is not detailed what this is or even if it will be available. Both units will apparently have a cradle.
The h4100 takes the smaller road, measuring 4.47″ long by 2.78″ wide by 0.53″ thick, and weighs in at 4.67 ounces. It is closely related in design to the iPaq 1900 series, but sports a different arrangement of buttons and directional pad. There is no apparent antenna nub, so WiFi performance may suffer somewhat.
The h4300 takes a different direction, trading increased size and weight for a high-capacity 1560 milliamp-hour standard battery and a thumb keyboard. The h4300 measures 5.46 inches long by 2.94 inches wide and 0.57 inches thick, and weighs 5.82 ounces.
Photos of the h4300 were not available, but this rendering was pulled from the user manual:
The cradle is a new design, and features an additional battery charging slot built-in. It’s currently unknown whether the 4000s will use the full-featured iPaq connector of the 2200 and 5500 series, or the reduced function 1900 style connector.