Which means, I can be listening to music and videos on the laptop, then when I get a phone call, it automatically switches to the phone. I loved that the noise-canceling works even when using the wired connection. At most I would get ~20 hours of use before it needed to be charged. To make the deal even sweeter, I only paid $17 for these (found them on sale on Amazon, theyre normally not less than $50 full retail). Te length is TTS. After reading the reviews, I decided to go down a few sizes and a get a large. Its still better than paying someone $100+ though, unless you have more money than time. The latch is my favorite part of it. ) Sennheiser- Very comfortable, will fit almost any size ears. Designed for Electric bikes in that it can handle 2 bikes at 65 lbs each.