Wang Computers,Where are they?

I am a collector of old computers and one of my favourites is a Wang WTLC Lap Top, The computer has an inbuilt 10MB
Hard Disk and an external 5"x360 Floppy.
I require information about the configuration, ram size ,CPU, graphics display, and any other information that some one can help me with, the system runs as new, with no problems, though i do not have an internal battery, or know where to get hold of one I also need a few spare spools of print ribbon for the inbuilt printer, I also do notseem to be able to run external DOS programs from disk, the graphics seem all wrong.
Thanks , Robinstationmaster@ozemail.com.au