Haven't used them but my wife said they fit well and she's been using them for a few weeks so I have to say they fit and well function. She usually let me know when she let in a lot of dust. Good price. A few years ago I worked on Panasonic equipment (digital copiers, fax machines and telephone/voicemail systems) and Panasonic makes some great products. I installed Panasonic phone systems and they were so bulletproof that I think they were taken off the market because they never broke and the sellers complained. I've been a fan of Panasonic products ever since.
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