AKG C520L Condenser Headset Microphone(s). I’ve got 22 of these pretty much brand new AKG condenser mics. Used for a concert a few years ago and never needed again. Pandemic hit and decided gardening was far less stressful. Been sitting in a cupboard in their boxes since. All tested and in fully working order. Price is for a single mic but happy to discount for a larger order.