bluetooth moudle spp Class 2 type Output Power, USB, UART, SPI, PCM interface Bluetooth Profiles: HFP, HSP, A2DP, AVRCP, SPP, ... Support* 3.3V operation* Minimum External Components* USB, UART, SPI, PCM interface* Support for 8Mbit External Flash Onboard* Support ... .0+EDROutput Power ClassClass 2Operating Voltage3.3VHost InterfaceUSB 1.1/2.0 or UARTAudio InterfacePCM and Analog interfaceFlash ...