Powerful little device. Thought AAA battery replacements would be an issue but I've been using this headset for 2 months and the original battery is still going strong. The device is more sturdy than the cheap headsets. I like that the speaker is flat against the device, rather than set in an earbud that you have to place inside your ear. The hold on your ear can feel a little loose at times, but usually that can be fixed by rotating the headset up or down a bit. Volume is very loud and usually I only have it set at half volume. Never have connection problems. I wish the on/off feature was a switch rather than a press and hold button, but I have found that is the case with practically any headset not just this one.