Sony Smart B-Trainer

Running without music, GPS tracking and a heart rate monitor can leave more seasoned runners feeling half-naked. But the alternative often means lugging a smartphone around on your run and returning with a seriously drained device.

Smart monocles and coaching headsets: Sony's striving for eyes and ears at this year's CES.

The Sony Smart B-Trainer is an all-in-one training partner that has exciting potential for runners

It looks like a round neck pair of in ear buds. It is, so you could use them as a simple music player however it is also a ‘Wearable Music Player with Fitness Tracker, so it can play music in a beat to match your heart rate (pulse).

This little unit was advertised as having everything, HR sensor, cadence sensor, gps sensor, waterproof, music player, and much more. However as a replacement for a sports watch, it simply does not work, having to press a button, and then listen while...

It's a stand-alone music player that can track runs with GPS accuracy and even overlay heart rate data for more detailed metrics and audio feedback while training. All while your phone stays safely at home saving battery, leaving you to enjoy training...