Visit Amazon sites : br AV-Leader AVL620 Professional Water Resistant Headset Microphone for Sennheiser Wireless Systemsbr br IPX-4 Waterproof Test Level Certified Protected against splashing water - Water is sprayed at all angles at 10 litersmin at a pressure of 80-100kNm2 for 5 min br Sweat and dust proof made for indoor and outdoor use High quality voicesound pickup br Testing Video at YouTube 1 httpwwwyoutubecomwatchvInas-Uh97tI br 2 httpwwwyoutubecomwatchv2pk3ZbFnvmk 3 httpwwwyoutubecomwatchvD29MW88CqmE br Compatible with Sennheiser Models Evolution Series EW100 EW300 EW500 G2 G3 SK 1093