The rx3415 - HP's third Mobile Media Companion, the rx3400 is similar to the rx3700, just with less memory and a 300MHz processor.

ENGADGET: The new iPAQ Pocket PCs are official

The rz1715 - Their low-end Mobile Media Companion, the rz1715 only has a 203MHz processor, 32MB of RAM, a 3.5-inch LCD screen, an SD expansion card slot, but no WiFi or Bluetooth.

ENGADGET: The new iPAQ Pocket PCs are official

The rx3700 - Another Mobile Media Companion, the rx3700 has the same media and universal remote software as the rx3100, a 400MHz processbuilt-in WiFi and Bluetooth, a 3.5-inch LCD screen, and an SD expansion card slot, but also has a built-in 1.2 megapixel digital camera.

ENGADGET: The new iPAQ Pocket PCs are official