HP Prime with high contrast keypad?

[Skyblues]

To confirm that the Prime is the newer one, what exactly is the difference between the "older model" with the low contrast and the "new model" with the high contrast?

I sent an email to officeworld.com in Oregon asking them if they could verify that they currently have the higher contrast model. Someone sent me a picture but I think the picture is of an older model Prime (probably not an actual image of what they have in stock).

What should I tell them to look for to visually verify that they have the newer one in stock?

Thanks,
Jim