3D may be all the rage, but 4D is better and more practical. At least when it comes to watch design anyway. Forget having to lift your arm in order to tell the time on this watch. You don’t even need to bother. Your arms are probably flabby anyway. This 4D concept watch can display the time based on gravity or depending on the head position of the person whose wrist it’s on.

All you need to do is look down at your wrist and you’ll be able to see the time. Soon you won’t have any arm muscles at all. The two buttons on the side of the display control the functions of the watch.

This concept InOne computer is a sexy all-in-one computer that captures your eye and won’t let go. It features a 22-inch display, keyboard, touchpad, speakers and a digital tablet all built into one single unit.

It also has built-in wireless connectivity and while we don’t have any detailed technical specifications, we don’t care. It is just too sexy. Hopefully it becomes a real product that we can buy. With good specs of course. Nice eye candy.

Most card readers just do what it says on the tin, read cards, but this concept design goes one step further. It provides a simple solution to store all of those memory cards you have. Peng Qixuan has designed this card reader and we like what we see.

You can easily store your memory cards inside, while it functions as a card reader with a retractable USB port. This card reader would be a perfect travel companion. Too bad it’s just a concept right now.

Sure you have many great watches to choose from these days, but what you want is something that will make you stand out from the crowd. Something like this HorodronHD-01 concept watch for instance.

Instead of an analog display, it features an E-Ink display that tells the time and also shows the date. But mostly it just looks cool and retro while also looking futuristic. We love the clean design.

Last week at CES 2011 case makers Incipio showed off an awesome looking conceptual Game Boy iPhone case. That’s the good news. It’s adorable right? Well, the bad news is that due to copyright concerns Incipio has no plans to ever bring the Game Boy iPhone case to market.

The Incipio iPhone case is fully detailed with button color, texture, and placement that’s nearly identical to Nintendo’s original Game Boy. That’s what makes it awesome, but it is also what makes it a problem apparently. The idea was to show what the company can do. They now have our attention.

We love Apple’s MacBook Pro because of the sleek design, but this HIDE laptop concept design might just do a tad better. This laptop design has slim panels on the side of the display, which cover up the sides of the laptop and the ports, when the lid is closed.

And so it appears to be one solid piece of aluminum when closed. As a bonus, it also protects the peripheral ports from damage. This HIDE laptop concept would be easy to incorporate into today’s laptops and it makes good sense.

The Motoworkr concept phone is designed not for you and I, but for medical professionals. It features a swivel keyboard design and incorporates various tools of the medical profession that are required for regular health checkups. Aside from those cool features, it also provides first aid during emergencies.

The Motoworkr also has an integrated Bluetooth thermometer and a card slot for reading digital and medical card information and to update health records. If this ever becomes real, it will be a Doctor’s best friend.

The Hexound headset’s design is definitely drool-worthy. It’s just a concept for now, but we sure hope they become real. The headset can be detached and then they are turned into portable speakers. There’s also a solar panel in the headband.

Other specs include Bluetooth and intuitive controls. With these, you can listen to your music alone or share it whenever the mood strikes you, just by detaching. Hopefully these become real one day soon. I know I would buy them.

Hate germs? Well, if you’re the type that approaches every door handle with a handkerchiefand a prayer, there’s one less door you need to be afraid of. There will be if this self-cleaning door handle concept becomes real anyway.

It continuously sterilizes itself with UV light, only stopping when you actually use it. A switch in the handle’s frame is what toggles the sanitizing illumination on and off. This design has even won a Red Dot award. Pretty clever if you ask us.

Musicians love their art, but it isn’t easy making music and having to worry about turning pages of sheet music at the same time. But the Smartstand concept can help. It features a simple multi-touch interface and a hands-free page-turning pedal to make sure that you can turn the page without missing a beat.

It includes an online music school, instrument tuner, downloads and more. Musicians would love this and it would make their lives much easier. Hopefully we will see these everywhere very soon.

The Neon Gen concept phone has a slim and sexy design. It also features a rotating display. The phone consists of two parts and can easily be slid open from the side, then you twist the top half to reveal the display.

The display supports touchscreen input and uses clips instead of screws to make assembly easy and presumably cheaper. The slim design makes it easy to carry with you in any situation. It might not be long until we see this sort of design being offered by manufacturers.

While we mostly look forward, some tech designers look to the past for inspiration. This “Jot” concept phone design for Samsung incorporates a rotary dial, along with a capacitive OLED display and a removable stylus.

It’s allows users to make phone calls using the rotary dial while the stylus is used for writing messages. We love the retro look, but who is seriously going to dial using that rotary dial? And it isn’t exactly pocket friendly either.

The guys over at Tokyoflash never stop designing cool new watches. The latest one is part of their concept series, and it was designed by Scott from the UK. And we hope they put this one into production very soon, since it looks awesome.

The two rings (based on a Tron Disc) represent the minutes and the hours. The break in the ring represents the time in a normal clock face layout. We hope that they make this tron inspired LED watch asap.

Hyundai’s IT 70 inch Table Monitor is a 70 inch concept table monitor that can either be used as an upright TV or a touch screen table similar to Microsofts Surface. This concept table is equipped with multitouch capabilities so it’s good for business, education or even gaming.

Sadly we don’t have any detailed specifications of the device at the moment. But a table fitted with a 70 inch high definition multitouch screen is always a good idea if you ask us.

If you want to make your own biodiesel at home, then this concept personal biodiesel processor is a safe and efficient way to go. It allows you to make an alternate fuel source right from the comfort of your home. Screw the big oil companies.

Just pour the necessary ingredients into the top and the device does the rest. The automated pumps, heating elements and thermostats take care of the entire process. A display shows you the current status. A pull-out tank collects the waste glycerin, which can be easily disposed of, or used for making soap.