The Plantronics MS200 commercial aviation headset combines a unique lightweight design and advanced technology to deliver the ultimate in comfort and reliability. The noise-canceling microphone enables clear, uninterrupted communications between air and ground. Its compact under-the-ear design ensures a secure, comfortable fit for extended wear, yet is convenient to carry and stow. MS200 Models and Part Numbers: MS200 P/N 92382-01 (2 Plugs; one each PJ055 and PJ068) MS200-1 P/N 92392-01 (1 Plug; PJ068 ) MS200 for Airbus P/N 92699-01 (1 Plug; XLR5)