Panasonic released its a portable Blu-ray Player two years ago, and it had a 1024 x 600, not 720p.
This new version of the DMP-B200 is also of the same resolution, and measure in at 8.9 inches. You can also hook up to a bigger screen with an HDMI connection.
The standalone player on the built-in rechargeable battery is good for about 4 hours of playback, provided the screen is completely dimmed. By the way, there is and SD card slot for whenever you want to load video content.
You should be able to get it for about $299.99, available now. It is hard to see Panasonic out-doing themselves with the gesture based television a DMP-HV200.