The Work Sharp employs a spinning glass wheel on to which you have adhered an abrasive sheet. The "see-through" wheel allows you to look down to see what you are sharpening.
The sharpening port enables sharpening of 20, 25, 30, and 35 degree angle chisels and plane irons up to 2" wide without he use of a jig.
The unit is cooled with forced air and a heat sink allowing you to removal metal without affecting the steel's temper. This means you won't ruin your tools.
The Work Sharp 3000 comes with a 2 year manufacturer's warranty, 2 tempered float glass wheels, a see-through slotted wheel, top tool rest, a crepe stick, and PSA abrasive kit.
Head over to Woodcraft.com to check out the Work Sharp 3000
I see that Amazon also carries the Work Sharp 3000.