Win a Sony Ericsson Xperia X10 and MiFi mobile Wi-Fi hotspot from Three!

Take part in our Greatest Gadget of the 21st Century tournament, and you could be the proud owner of a Sony Ericsson Xperia X10 smart phone and a MiFi mobile Wi-Fi hotspot. Oooh, we're good to you. Actually, Three's good to you, as it's providing the prizes. 

The X10 runs the Android operating system, so you can harness all the power of Google and access all the apps in the Android Market. 3G and Wi-Fi connectivity will keep you connected wherever you go, and you can document your epic wanderings with the X10's 8.1-megapixel camera, which shines compared to most mobile snappers. The handsome handset also offer 4 inches of big-screen loveliness, so even the porkiest of fingers should have no problems navigating the slick interface.

The MiFi is technological magic at its most marvellous. Stick a SIM card in it, and it'll convert a 3G signal into a Wi-Fi bubble, allowing you to wirelessly connect up to five devices to the Internet. You need to make sure you're in an area with a 3G signal to make the MiFi work, but Three's recently completed a massive expansion of its network, so you'll be covered in almost 97 per cent of the UK. You'll get 5 hours of battery life from the MiFi, which should be enough to get your daily Lolcat fix while out and about.

Both prizes come on pay as you go contracts. The X10 is worth £499.99 and comes with £30 free credit. The MiFi is worth £70 and comes with 3GB of free data.

All you have to do to win these gadget delights is vote in our Greatest Gadget of the 21st Century tournament. You can read our tournament FAQ here, and then head over to the tournament page to get voting. Best of luck!