该规范定义了创建可互操作的Bluetooth 设备所需的技术。
在声称符合核心规范2.1+EDR时，勘误表更正4656是强制性的。
核心规格 2.1+EDR 已撤销
| Documents | |
|---|---|
| Core Specification 2.1+EDR | |
| Errata Service Release (ESR) 03 | |
| Errata Service Release (ESR) 04 | |
| Errata Service Release (ESR) 05 | |
| Errata Service Release (ESR) 06 | |
| Errata Service Release (ESR) 08 | |
| Errata Service Release (ESR) 09 | |
| Errata Service Release (ESR) 10 | |
| Errata Service Release (ESR) 11 | ZIP |
| Core Specification Addendum (CSA) 1 | |
| Core Specification Addendum (CSA) 2 | |
| Core Specification Addendum (CSA) 3r2 | |
| Core Specification Addendum (CSA) 4 | |
| Errata Correction 4656: Clarifications for Allowable Complementary Subsystems |
