Enjoy your favorite music while you exercise. The MDR-AS210 features adjustable loop hangers for a secure fit during sports, and a 3.9-ft cord that gives you room to move. Music sounds clear and detailed, thanks to the 0.5-in drivers with optimized frequency range.Adjustable loop hangers clip securely to your ears so you can really get your body moving to the beat.When you’re feeling the strain in those final workout minutes, pure, energized sound keeps you going until the very end.With 104 dB/mW sensitivity and a frequency range of 17–22,000Hz, turn up the volume and hear pure detail.Sound flows in and out through the back of the earcups for a more natural sound.Free up your movement with a cord that’s long enough for the treadmill or the streets.When the rain beats down, splash-proof headphones will keep on playing throughout your training