I recently purchased the Motorola HS820 Headset and i have it paired with a Motorola RAZR V3 phone, and I can hear everyone just fine, i have to have the volume on the mid setting other-wise it is to loud to listen to, so volume isn't a problem but the caller sometimes says its hard to hear me. And I have had callers saying they can hear an echo of their own voice when I use the Headset.