Description 5.0 wireless dual-mode dongle. The chip integrates a low-power MCU, RF transceiver, baseband, modem, USB, UART, PCM / I2S, SARADC and 24 GPIOs with the Berry Bluelett protocol stack to provide low-cost, low-power flexible and powerful wireless application. Features - Color: Black.- Size: 2.2 x 1.6 x 0.6 cm/0.87 x 0.63 x 0.24 inch.- Material: Plastic.- Transmit power: 10DBM (Class II)- Sensitivity: -90dBm.- Speed: 3Mbps- Protocol standard: V 5.0 protocol.- USB expansion port: USB2.0.- 5.0 wireless dual-mode dongle. The chip integrates a low-power MCU, RF transceiver, baseband, modem, USB, UART, PCM / I2S, SARADC and 24 GPIOs with the Berry Bluelett protocol stack to provide low-cost, low-power flexible and powerful wireless application.- Support Cass1 / 2 Power levelclassic and low energy- Support USB / UART- Support 7-BR / EDRE ACL link, 1-SCO / eSCo audio link and 1- BLE slave link or 4- BLE master- Supported operating systems: Compatible for Windows, Android, Linux, FREERTOS, ThreadX UITRON.- Support application functions: HFP / HSP (hands-free phone / headset) A2DP / AVRCP (stereo music) HID / HOGP (keyboard and mouse). DUN / PAN (Internet access), PBAPMA PFTPSPP.GATT, etc.- Applicable products: mouse, keyboard, speaker, earphone, printer, gamepad, etc.Packing list: 1 x Wireless Receiver Transmitter