PDA's are typically not waterproof. You can, for some PDA's, buy waterproofing kits, however.
The most common forms of PDAs are Smartphones, palm PDAs and pocket PCs.
Handheld PDAs are available from Amazon. Alternatively you can purchase handheld PDAs from eBay and other online sites new. You can also buy them second hand from Gumtree.
In my opinion, Blackberry and Palm make the most functional PDAs
nothing
There are many different models of color handheld pdas. However, the first few models were the Palm and the Newton.
they dont have one
No, PDAs do not have gears in them.
the year was 1975
How about an iphone...
yes
wisp
China made PDAs.