See the latest release notes for Jabra Evolve 65 TE

Security Updates:

• Upgraded Bluetooth encryption to 128-bit key length.

Note: This update may not be compatible with older Bluetooth devices when connected directly. Where possible it is recommended to use the supplied Jabra Link Bluetooth adapter for optimal compatibility.

A security mandate requires that Bluetooth encryption is not permitted to be negotiated below a 128-bit key length.