There's also an HDMI port for outputting 1080p video to a TV, along with one full-size USB port, a mini-USB connector for syncing and updates, a power port and a micro-SD card slot, for adding up to 32 gigs of extra storage.
While size is the main focus, there are also a few other improvements being toted in the Sprint -- it sports a micro-USB port for charging (changed from mini-USB), a softer cable between the buds, an inconspicuous notification LED, enhanced call quality and the multifunction button has been repositioned to the top of one of the earpieces (the JF3's is on the outside).