it is new WiFi+Bluetooth dual-mode development board based on ESP32 design, using PCB on-board antenna, using 7-level pipeline architecture, main frequency adjustment range 80MHz to 240Mhz Ultra-low power consumption, deep sleep current is as low as 6mA. It is an ultra-small 802.11b/g Wi-Fi + BT/BLE SoC module -ESP32-CAM-MB adopts Micro-USB interface, convenient and reliable connection , convenient to apply to various IoT hardware terminal occasions. Application: Home smart device image transmission; Wireless monitoring;Smart agriculture;QR wireless recognition; Wireless positioning system signal and so on. Material:Plastic + Metal colour:black Package Contents: 5 * ESP32-CAM-MB Camera Module Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.