Intel CEO Brian Krzanich unveiled the chipmaker's new wearable prototypes at yesterday's keynote address. Among the reference designs was a pair of smart earbuds with biometric capabilities, designed to track the user's run, record burned calories, and read their heart rate. Intel is showing off the design at its booth at CES. The earbuds are lightweight but bulky — presumably to house all those sensors — but won't require a separate power source for a charge. Intel says that developers will also be able to develop especially for the device.