Thin is in. Just look at the example set by Apple in everything from it’s Macbook and Macbook Pro 
series to the constant shrinking of the iPod. Thick and heavy tech devices are yesterday’s news. Following in that trend is Doghouse Electronic’s RoverTV PMP, a PMP that is "superskinny" and truly pocket sized (via Portable Video Player News). How does it accomplish such a feat? Easy - they removed internal storage. In order to use the RoverTV, you’ll need to have SecureDigital (SD) cards handy. Don’t let that scare you, though, because there are some pretty nice features in this tiny, pocket sized PMP.
For one, the unit can record from any video source directly to your SD card. Smartly, Doghouse Electronics included a timer to turn recording off after a specified period of time so that you can start a recording and come back when it’s complete. It can also output that video to a television. RoverTV is also compatible with TiVoToGo, so taking your TV on the road is doable with this beauty. It also has a built-in FM tuner that you can record from if you hear something that tickles your ear. You can view pictures while playing background music and can even read lyrics when playing back MP3 and WMA files. It’s not clear what formats other than MPEG-4 the unit supports for video. Either way, you’ll get 5 hours of video time and up to 14 hours of audio time with the rechargeable and replaceable Lithium-ion battery. eHomeUpgrade | RoverTV PMP Features Line-In Recording and SD Memory Card Storage