The Monster 128939 iSport Freedom, it's where freedom of movement meets the power of music. Delivering all your tracks with a comfortable on-ear design, Freedom powers your routine with Pure Monster Sound™. The multi-function key lets you power on or off, answer calls, track forward or back and control the volume. Superior design and construction-optimized for comfort and reliabilityThe wireless iSport Freedom lets you focus on your fitness, calls, and music without worrying about cords or wires. Reflective safety trim lets you safely train after dark while antimicrobial soft ear cushions give you bacteria-free comfort. Tough, durable and waterproof, iSport Freedom is easily cleaned. Sweatproof, Freedom stands up to your most rigorous workouts.