Other than the 921SH, Softbank offers also the 922SH, also made by Sharp. Softbank / Sharp 922SH is a 3G phone supporting WCDMA and GSM networks, which mean you can use the phone in the US if you can unlock the SIM lock.
922SH has a 3.5-inch ASV 480×854 LCD display, an external 1.18-inch display. It has two cameras, a 2 Megapixel camera and a 0.11 Megapixel camera at the front for video calling. It supports also InfraRed and Bluetooth connectivity.
It looks like the phone is running Windows Mobile OS and it has a QWERTY keyboard. It comes with a microSD/SDHC card slot.