Got these as an option for my gym bag. They're surprisingly compact compared to similar earbuds I own (see the photo, with an AA battery for comparison). No problems connecting to the phone -- the connection was immediate, and seems stable so far. The earbuds are visually attractive. The sound quality is on par or above with other BT earbuds I've used: decent soundstage, somewhat bass-heavy. The comfort is above average. The diminutive size of the buds has a lot to do with it. They stay flush with the ear, and can be positioned to remain largely immobile when exercising. All in all, I'm quite happy with those, and hope to use those for awhile.