... antenna 2).CSR8 Chipset 3).Small size low engergy bluetooth pcb module 4.0 Bluetooth Module can be applied to kinds ... * Support multi baud rate(such asl.2k, 2.4, 4.8, 9.6k, 19.2k, 38.4k, 57.6k, 115.2k ... working mode* Safe authentication, data encryption.Photo: low engergy bluetooth pcb module 4.0