Roanwell makes “G”, “K”, “F” and custom style handsets, equipped with: carbon, dynamic or electret microphones. Microphones can be Confidencer type (noise cancelling). Other options include amplifiers and on-off/push-to-talk/push-to-mute switches, receivers with adjustable volume control, hearing compatible, etc. The Vocoder or Security Handsets are just samples of Roanwell’s custom offering. All handsets are available in many colors.