Design and features:The CX Sport has an integrated microphone and volume, music player, and call connect/disconnect controls for paired Bluetooth devices. This model is claimed by the manufacturer to be water resistant and comes with four pairs of ear pieces in various sizes, three pairs of ear bowl supports in various sizes, a USB charging cable, and a carrying pouch.
Sound quality: We found the CX Sport delivers sound quality that falls in the Very Good range - it reproduces music and voice very well although it does have some noticeable sonic quirks. The overall sound can best be summarized as sizzly and somewhat boomy. Bass (as in bass drums, bass guitars, stand-up bass, etc.) has good impact and goes deep, but is somewhat prominent and boomy. The midrange (voices, guitars, horns, etc.) is a bit lean, grainy and edgy. The treble (cymbals, the upper range of violins, etc.) is fairly extended, but is sizzly (sounds that should have a delicate shimmer have a sound reminiscent of bacon frying) and somewhat prominent. The sound has a good sense of liveliness and is somewhat open -- sound-wise it almost seems like you don't have anything plugging up your ears.
Comfort: As typical of in-ear models they produce a sense of pressure in the ear canal opening might be uncomfortable for some. They fit and stay in place with no problems, and the ear bowl support earpieces make the fit very stable even during vigorous head movements. The sound of the earphone connecting cable rubbing on clothing may be transmitted by the earphones.
