American musician-cum-entrepreneur Will.i.am thinks he’s got a radical gadget to beat the band: a massive, app-infused wrist wearable that he says can do everything a phone can, and more. The self-proclaimed tech fashion guru unveiled the Puls on Wednesday, a smartwatch-type device designed to be worn throughout the day. It will run at least a dozen apps, handling everything from Twitter to phone calls to fitness and maps.