Very good concept to have PDA function in a watch. Few thing worry about this new technology are: (1) the screen is too small for reading detailed information. (2) buttons may not be sufficient and convenient for data input. (3) battery may be exhausted easier than normal watches.

Personally, I think a watch should tell times instead of using for other functions since at present we already have mobile phone with PDA function or a PDA with mobile phone function. It may be too much to ask for a watch to handle the functions of which have already been taken care.

Cheers!