Touch Sensor: used touch sensor button instead of physical buttons, soft touch to control play/pause/next song and answer phone call when listening music, don't need to press hard the button which may cause the earphone deeply into ear uncomfortable. Touch Two mini headsets with CVC 6.0 Noise & Echo Cancellation technology, it filters the outside noise to ensure the clear sound quality, makes you enjoy the stereo surround high quality music and unparalleled sound quality. Super lightweight only 4.5 grams (one side), with 3 size of earbuds for fitting your ear and giving you a comfortable wearing. Ergonomic design earphone body make sure the earbud stay put when you are running. Touch design earphone only need to touch lightly to skip, stop, and power on/ off, will not affect your listening or activity. Super ideal for your training, driving, walking, desktop work, work, commuting, school DVD viewing, Teleconferencing, etc. Dual Ear Mode/Single Ear Mode: The two Bluetooth earbuds can work individually or in pair, Professional XP5 waterproof, Mini bluetooth headset with charging box,the box is small and easy to carry,suitable for travelling