There are tons of peripherals out there for Sony's PSP handheld game system, but one of my favorites right now is Nyko Technologies' charger case.

This sturdy aluminum case both extends the battery life of your PSP and gives it a comfy metallic shell to call home. There's a battery built into the case, which is recharged with a wall plug.

When you're ready to play, take the PSP out of the case and run a cable from an external plug on the case to the PSP's DC plug for several extra hours of power. The PSP and the charger case can be charged separately, or you can pop your PSP inside the case, plug the case into the wall and charge both devices simultaneously.

The case feels solid and has a sleek look that will tip off any gadget fan that you're toting an expensive electronic device. Whether you want to broadcast that fact probably depends on where you like to play with your PSP.

While there's no display on the case to indicate how much charge is left, it doesn't really matter. Once the charger case runs out of power, you can just use the PSP's internal battery readout to see how much time is left on that battery.

The charger case is pretty much a flawless device that does exactly what it promises. Too bad perfection costs nearly 70 bucks.

TRY AN 8-INCH DISPLAY

Joytech's new LCD monitor for the redesigned, smaller PlayStation 2 is another piece of technological perfection.

This 8-inch display works only with the slimmed-down version of the console, but it's the perfect piece of equipment for any traveling gamer. The display screws easily into slots on the back of the PS2 and plugs neatly into the power and display plugs.

The monitor comes with an adapter for a car's cigarette lighter to power both the console and the display. Or you can use the regular power cable that comes bundled with the PS2.

There's also a remote control, if you want to use your new clamshell contraption as a DVD movie player.

The screen is one of, if not the, largest portable, attachable displays you'll find for any video game console.

And the screen is excellent.

It even displays the super-sharp video signals normally only available when running component cables to a high-end television. The speakers are decent, but there are two headphone jacks on the side of the screen for better sound quality. The screen also allows access to the optical audio port on the PS2, as well as the telephone jack and Ethernet port for online play.

When you fold the screen down, it matches perfectly the dimensions of the console, and is about as thick as the system.

The console and screen are about the size of a thick hardback novel when folded together, and the case even comes with a handy storage bag that can hold the entire contraption.

Obviously the main market for this screen will be kids on car trips. But the screen is big enough and good enough for everyday use as well, if you don't want to monopolize your main television.

Cost: $149.