说明：  2.0+EDR版蓝牙核心规范,新的规范主要提升了数据传输速率，最快可以达到 当前蓝牙标准的3倍，支持多种蓝牙设备同时运行，并且降低了电力消耗。
(2.0+ EDR Bluetooth core specification version, the new norms of the major upgrade of the data transmission rate, the fastest can reach the current Bluetooth standard 3-fold, to support multiple Bluetooth devices at the same time to run, and reduced electricity consumption.)