Display Output: RGB 1080p@60fps ,MIPI 1080P@60fps , -compatible 4K@30fpsWireless network: onboard 2.4G WIFI+BT module, 2.4G antennaUSB connection: one USB type-a female USB OTG type-c female (on the core board)Audio circuit: on-board 3W speaker driver circuit and electret microphoneStorage circuit: the core board has a TF card connector; A WSON8 pad is reserved on the backplane (SPI FLASH is supported)Extended connection: onboard 30P FPC connector (can be connected to Mic R6 microphone board)GPIO expansion: through 2 x 20P 2.54mm pad leads out GPIO and power supply for usersOther functions: one WS2812 RGB LED, one reset button buttonOverall dimension: 65mm x 40mmColour:blackMaterial:PCB+ metalPackage Contents:1x for RV Dock expansion boardOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.