We never got the flying cars and jetpacks we were promised. But Dick Tracy’s two-way wrist radio is becoming a reality. Sony’s SmartWatch, first shown at January’s CES, has hit the market. It’s yet another wrist-mounted gadget that complements your smartphone. In Sony’s case, the SmartWatch is a second-screen for a Bluetooth-enabled Android device, letting the user read emails and texts, control music playing on the phone, and interact with some 60 other mini-apps. Oh, and it tells time too. No word on whether or not it connects with headquarters.