Please be aware that it uses AAAA battery instead of AAA. The main difference here is that there are no rechargeable AAAA out there if that is what you are looking for.

Be prepared to buy batteries out the wazoo for this.

I bought one of these for an emergency a while back (the mic on my phone died while I was traveling). Works pretty good, several hours of talk time on a single battery. Take the battery out of the device if you're not going to use it for a while, as it does drain slowly when not in use.

This thing is total garbage. Newegg gave me two of these free w/phone purchase 13 months ago. It would probably be more comfortable up my ass than over my ear. AVOID!

I got two of these free with a phone I purchased a while ago and they are absolute crap. Uncomfortable, impossible to use, no one carries the batteries and it randomly hangs up on people. carrothertz08 has the right idea, this headset it better off shoved up the backside of a random stranger than hanging from your ear.

If you get a 9 volt battery it has like 6 AAAA
cells inside ,a cheap way of getting them.

wtf is an AAAA battery?

Isn't this the device worn by Lieutenant Uhura in Star Trek?