Onboard OV2640 camera and digital microphone, support image recognition and voice processing On-board 40 PIN GPIO interface, can be connected to HAT module to adapt to IoT applications On-board lithium battery charging boost chip, supporting battery charging and discharging and USB power supply Compatible with and ESP-DF software , seamless connection to ESP-WHO application Onboard 8 MB PSRAM, 4 MB FLASH memory, support SD expansion at the same time Onboard USB to UART chip CP2102, convenient for serial port debugging and download Onboard 4 LED indicators, easy to check the operating status of the module Provide a complete supporting information manual WiFi Standard: 802.11b/g Bluetooth standard: Bluetooth 4., 2, including traditional Bluetooth (BR/) and Bluetooth low energy (BLE) Processor: Xtensa LX6 dual-core processor @240MHz Camera: OV2640 (UXGA1622x1200) : 520KB+8MB Flash: 448KB + 4MB Input voltage: 3.3V-5V Working voltage: 3.3V Charging current: 1A@5V The whole machine consumes 7.7mA@5V (ESP32 deep sleep) Product size 65mmx30.5mm Working temperature -40Celsius~85Celsius Colour:blue Material:abs+metal Size: 65mm x 30.5mm Package Contents: 1 x ESP32 development board 1 x OV2640 camera 1 x usb cable 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.