Train and run in total comfort, the Sennheiser/adidas OMX 680 Sports clip-on earphones make for an excellent option for fitness fiends. Their fully adjustable ear clips follow the contours of your ears, providing a secure, custom fit while high-output drivers deliver a powerful and energizing stereo sound, pepping you up during your run or work out. These earphones have been designed and tested for heavy movement. Their strain relief parts are made of highly-flexible, shock-absorbing material while the cable is Dupontâ„¢ KevlarÂ® reinforced, offering you unmatched strength and durability. Even under the toughest of conditions, e.g. -10 degree celsius, the OMX 680 Sports have been found to function well and maintain their flexibility. Their short cable allows for a hassle-free experience especially when you wear your audio player around your neck or on your arm. However, you may attach the extension cable which comes integrated with a volume control, whenever you require added cable length. The OMX 680 Sports also feature a unique moisture protection system - it protects the sound system from sweat and water, no matter how heavy you work out (and sweat) or how heavy the rain may be.