Design and features:The R6 BT has an integrated microphone and Bluetooth volume, music player function, and call connect/disconnect controls. This model comes with four pairs of ear pieces of various sizes and types, a removable cable shortening clip, a USB charging cable, and a carrying bag.
Sound quality: We found the R6 BT 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 somewhat bassy and slightly soft. Bass (as in bass drums, bass guitars, stand-up bass, etc.) has good impact and goes fairly deep, but is boomy and somewhat prominent. The midrange (voices, guitars, horns, etc.) is fairly even, but slightly hazy and congested (think sonic traffic jam). The treble (cymbals, the upper range of violins, etc.) is a bit subdued and the upper treble is slightly soft. While the sound has a decent sense of liveliness, it is somewhat closed-in -- sound-wise it is somewhat obvious that you have something plugging up your ears.
Comfort: We found that these earphones produce a sense of pressure in the opening might be uncomfortable for some. While the ear tips fit like typical in-ear models, the bulky ear hooks tend to flop around and may make the earphones feel a bit unstable and may even cause the earphones to become dislodged during vigorous head movements, especially on users with smaller ears.
