Top features: - Pure Monster Sound for you to experience the music as it was recorded - Two sound profiles to put you in the right workout mood - Eight-hour battery life so you are never without music when training or out and about - High sound isolation to help you focus on your training with minimum distraction Pure Monster Sound Catch the pick in a guitar solo or the subtleties in a vocalist's delivery with these Monster iSport Victory In-Ear Wireless Bluetooth Headphones and Pure Monster Sound technology, which lets you experience sound in its purest and clearest form. Two sound profiles The Victory Headphones let you choose between two sound profiles - standard for when you're just getting started with your workout, and turbo for when you really need the music to keep you going. Eight-hour battery life Even when running a marathon, eight hours of battery life means you'll always have music inspiring you to push your limit. High sound isolation With iSport Victory In-Ear Headphones, traffic noise and other disturbances are filtered out so that you can focus on your training.