Motorola RAZR V3

I'm currently using the HS820. It came with the package. I've owned the Jabra & Sony Ericsson blue tooth headset. What makes the HS820 different is that it has voice dial recognition and while on a call you can turn on the HS820 and connect to the call. These are things you can do with it that you're not able to do with the other blue tooth headsets. Although I've never tried the HS810 I could only speculate that the HS820 is a newer version, which in most cases is better. The battery last a long time. Over 3 hours of talk time. I hope this information helps.