For many, a morning run means hauling along three pieces of tech: a pedometer or other fitness monitor, plus an MP3 player and headphones. The new iRiver ON
, set to debut in March, combines two into a single product: the Bluetooth wireless audio headset includes an ear-mounted sensor package from Valencell that can determine heart rate, distance, speed, cadence, VO2 max (aerobic fitness level) and calories burned. Valencell's CEO tells us that more licensees will be announced soon, although iRiver should be first out of the gate. Pricing has not been announced.