Mac doesn't connect to Sennheiser wireless headset

Hi, j80john, let’s start with the basics:

is your Mac Discoverable via Bluetooth, eg is Bluetooth fully on… the discoverable bit is part of Bluetooth as it won’t work at all if your Mac discoverable… try this link??

https://avantree.com/ca/knowledge-base/how-to-factory-reset-sennheiser-headphones-speakers/?___store=ca&___from_store=default… do you have a model number for this particular Sennheiser wireless headset?? Try sennheiser.com

john B