Wearable tech trend: Watch alerts wearers of impending heart attacks

From biofeedback bracelets to smart socks that help wearers run most effectively, wearable computing the all the rage. Now the technology is being used for diagnostics that may actually save the lives of wearers. The Oxitone armband continuously monitors heart rate and blood oxygen levels -- two of the core vital signs used to monitor patients suffering from numerous chronic and acute conditions. It makes users aware of fluctuations and automatically triggers alerts to emergency responders to facilitate early clinical intervention.