Train efficiently without losing the entertainment from your ears while jogging by using this Sony Smart Sports Gear Training Device. It’s designed to support your training with music and voice guidance. The device is a beautiful combination of a sports device and a music player which comes with an app to provide management of training sessions and various training menus. Be it about training for a marathon or a simple weight loss program, you can now train with precision and accuracy by following this training cycle. You can transfer up to 3900 songs to the internal memory (16GB) of the device and stay in touch with your musical side at the same time. Since it works as a simple earphone too, you can use it to receive hands-free calls as well. A perfect training accessory fitness enthusiasts are in need of.