OnBeep is readying a wearable device that will let smartphone users initiate a voice chat with a pre-defined group of people, walkie-talkie style. And it’s got $6.25 million in funding to make that wearable a reality. The device will be customized for voice communication in small groups, and users will be able to activate it with a single touch. “We are in early testing right now, so we are keeping the product under wraps. But it can be clipped to a shirt, jacket, bag or purse strap,” CEO and co-founder Jesse Robbins said.