Rannsgeer UVS70DR-H4P Mini Headset Microphone is designed especially for Audio Technica Microphone System. Built in with Mini capsule diameter and the ultimate in low profile, high performance vocal pickup Omnidirectional condenser headset microphone. The Bendable boom is designed for user convenient depending on the face size and pick up voice. This Ultra-Light Weight headset can also be used exchangeable with right or left ear. More Features also include Detachable Cable and Sweat, Dust-Proof Made Primarily for Indoor and Outdoor activities. Suitable used for on Stage, Houses of Worship, School Lecturers and Other Applications that Require Minimum Microphone Visibility with hand-free Operation Compatible with Audio Technica Body-Pack Transmitter Models: ATW-T210, ATW-T310, ATW-T75, A TW-T701, ATW-110G, ATW-T1000. (Not Compatible with Audio-Technica Transmitters: T35, T75, T211, T601, T701, 1000 Series, 1200 Series, 3000 Series, 4000 Series, 5000 Series, 7000 Series) RoHs and REACH Complied. Without Pb, Hg, Cd, Cr6 , PBB, PBDERoHs and REACH Complied. Without Pb, Hg, Cd, Cr6 , PBB, PBDE. Ultra-Light Weight, Easy Clip-on Style. Sweat and Dust-Proof Made Primarily for Indoor and Outdoor activities. Can be used for on Stage, Houses of Worship, School Lecturers and Other Applications that Require Minimum Microphone Visibility with hand-free Operation. Package include 2 Mini Windscreens for user convenient in case you need to have two people using the microphone. Not Compatible with Audio-Technica Transmitters: T35, T75, T211, T601, T701, 1000 Series, 1200 Series, 3000 Series, 4000 Series, 5000 Series, 7000 Series. This replacement ear-hook headset does compatible with Audio Technica Body-Pack Transmitter Models: ATW-T210, ATW-T310, ATW-T75, A TW-T701, ATW-110G, ATW-T1000.