Blackbox C20 ergonomically designed earphones fit comfortably in the ear, delivering accurate sound reproduction from the audio source. Active noise-cancellation & intelligent electronics of the C20 deliver sound as you expect to hear it, eliminating most typical background noise found in environments such as transit vehicles, trains & aircraft cabins
- even the distraction of busy office environments. The Blackbox smart engineering also eliminates the discomfort of mobile phone signal interference to your music.