I've had mine for almost a year now and love how small this headset is!Some users might complain that following the directions for positioning the rubber ear piece results in it not staying in the ear. Might I suggest using the opposite position (if right eared, use a left eared position for the unit when placing it into your right ear). I found that the switch easily allowed me to retain the headset securely in my ear.We're human and everyone's ear is constructed differently, so don't let that disappoint you when you discover the initial fit causes it not to stay, resulting in it falling out of your ear.I use it with my Samsung cell phone. Despite the matching brands, I sometimes hear faint static. Of course, when you're using this in your car and there's road noise, you won't notice any issues at all!I would have liked to give it 5 stars, but gave it 4 because the volume controls are so tiny that my hand has trouble adjusting them easily.But overall this is a decent bluetooth headset.