Lightspeed Aviation http://www.lightspeedaviation.com/Fitting comfortably in your ear, the Mach 1 series of headsets provide excellent noise reduction, comfort and great sound quality.Weighing less than one gram, but uses developments in Ear Plug cushioning and comfort: custom earmolds, ultra small speakers and a noise-canceling microphone. The Mach 1 delivers crystal clear sound, a stable fit, and over-the-ear-supporting all-day comfort. More information about the Mach 1 on www.lightspeedaviation.com