The main chip uses a low-power dual-core 32-bit CPU with a main frequency of up to 240MHz and a computing power of up to 600DMIPS Default 32Mbit SPI Flash, 520KB Support SoftAP and Station mode Ultra-small 802.11b/g Wi-Fi + BT/BLE SoC module Support UART/SPI/I2C/I2S/PWM/ADC/, etc. Support firmware upgrade (FOTA) The antenna supports onboard antenna or socket output Colour:Black Material:PCB Tips: The product may be updated constantly ,Due To Different Batches, The Actual Product May Have Slight Differences Or Color Differences, Which Does Not Affect Use Package Contents: 1 * ESP-32S Module Only the above package content, other products are not included. Note: Light reflection 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.