The Model H9935 Wireless Headset is ideal for pushback, deicing, general ramp communications, as well as aircraft maintenance applications. The headset is designed for use with David Clark Series 9900 Wireless Systems. The H9935 model features a new, M-2 microphone for clear speech clarity and high-profile ear domes for increased noise reduction. A new, over-molded flex boom assembly provides added durability in rugged ramp environments.