Specifications Core Specification 4.1 Withdrawn This specification defines the technologies required to create interoperable Bluetooth devices. Documents Core Specification 4.1 PDF Errata Service Release (ESR) 08 PDF Errata Service Release (ESR) 09 PDF Errata Service Release (ESR) 10 PDF Errata Service Release (ESR) 11 ZIP Core Specification Addendum (CSA) 5 PDF Core Specification Addendum (CSA) 6 PDF
