I was very disappointed with this product. The wire includes a volume/mute control. I don't know if mine is defective, but I can only hear at a reasonable level when both the phone and headset volume are set to max. By contrast, with my Jabra C500 I keep the phone volume at 3 (out of 8). Also, the "under-the-ear" design and swivel earpiece aren't that comfortable or secure (the headset flops around a lot, and the earpiece hurts after 15-20 minutes). I've owned several other "over-the-ear" designs with earpiece gels that are much more comfortable for long term wear and stay put. In addition, this headset it a _lot_ pricier. The C500 for $1.50 + $3 shipping is a no brainer compared to this. I bought two for $9.