Wearable Tech 3: Accessories Summary: Geek tech to add extra functionality to your day wear By Eileen Brown for Social Business | August 4, 2012 -- 11:18 GMT (04:18 PDT) Follow @eileenb Previous | Next Image 1 of 15 Wearable MP3 PlayerTouch screen on the back of the hand giving complete control and access to your playlist. Credit: DesignbuzzWearable Tech: LEDWearable Tech 2: Fiber Optics Heartbeat NecklaceCeltic knotted triangle with LEDs that flash in sync with the wearer's heart rate. The user wears a heart rate monitor and the receiver is housed on the necklace. Credit: Fashioning TechWearable Tech: LEDWearable Tech 2: Fiber Optics Topic: Emerging Tech Kick off your day with ZDNet's daily email newsletter. It's the freshest tech news and opinion, served hot. Get it.