I'd never used bluetooth and I didn't want one that I'd have to clip onto my ear whenever I got in the car so I was looking for a simple hands-free device. This is it.Clipped to my sun visor it puts the speaker and the mike very close so that I can hear well and the caller can hear me clearly. In case I wanted to mount it elsewhere the clip is movable and removable and the mike swivels to pick up the sound best.There were two unexpected bonuses and one unexpected weakness. First the weakness -- it has no AC adapter to charge up its rechargeable batteries. It does, however, include a cigarette lighter charger as well as a small adapter that allowed me to fit an AC adapter I already had for a different device. So, since I could charge it at the wall socket after all I guess I can't complain.The bonuses had to do with its functions. First, when I got in the car and a call came to my cell phone, even though I'd forgotten to turn on the hands-free device, it turned itself on and I could answer the call normally with the press of a button. Second, when I left my cell phone on silent vibrate, the hands-free device did not sound with the normal programmed ringtone but it did give a little discreet chime to let me know someone was calling anyway. Both are very helpful bonuses if, like me, it's not yet second nature to line up all your devices before setting off.I've used my cell phone's voice calling feature through the device and it has been at least as effective as speaking commands directly into the handset. So all those things, along with the price that made this one of the least expensive devices I found, lead me to give it five stars.