Dick Tracy, eat your heart out. Or at least Tracy wannabes. MobileWhack is showing off these walkie talkie watches. They have built in PMRs (Personal Mobile Radios) that are voice activated and have a range of about 1.9 miles (3km). They can also be used with a PTT (push to talk) headset. The watches offer 40 hours of stand-by power, and six hours (theoretically) of continous talk time, on a charge. They sell for US$97 each. You’ll need two if you don’t wanna look like a complete whack-job (although I guess you could always just pretend there was somebody on the other end).