[sactoroy]

I'm looking for extra wired headsets as backups in my vehicles and have a 8900 with 3.5 mm jack. I checked ebay and some wired headsets specify working with certain models and wonder if this is just because the vendor decided not to list all the compatible BB models. My question is do all OEM wired headsets with a 3.5 mm plug work with all BB models with 3.5 mm jacks?