Listen to your favorite music tracks with exceptional stereo sound using the Sennheiser MX 680 Sport headphones. As these Sennheiser headphones sport a sweat and water-resistant design, you can enjoy music even during your workouts. Featuring high-output drivers, these in-ear headphones reproduce high and low frequency sounds with exceptional clarity. Also, the Sennheiser MX 680 Sport supports an earfin holding system to ensure a secure and comfort fit. As these in-ear headphones boast a frequency response ranging between 18 Hz and 20 kHz, you can listen to a range of sounds. Moreover, with sound pressure level (SPL) rating of 118 dB, these Sennheiser headphones deliver high-fidelity sound output. What’s more, just connect your iPod or iPhone with these Sennheiser headphones via a 3.5 mm jack and have fun listening to music in a truly immersive surround sound.