ITEM NAME:ESP32 ESP32S Bluetooth WIFI Kit Internet Development Board OLED Display Module Product Description Description: Description: 1.ESP32 is already integrated antenna and RF balun, power amplifier, low-noise amplifiers, filters, and power management module. The entire solution takes up the least amount of printed circuit board area. 2. This board is used with 2.4 GHz dual-mode Wi-Fi and Bluetooth chips by TSMC 40nm low power technology,power and RF properties best, which is safe, reliable, and scalable to a variety of applications. Feature: High performance-price ratio. Small volume, easily embeded to other products. Strong function with support LWIP protocol, Freertos. Supporting three modes: AP, STA, and AP+STA. Supporting Lua program, easily to develop. Specification: Size: 62mm*18*5mm/2.44*0.7*0.19'' Weight: 8g Note: Please allow 1-3mm differs due to manual measurement. Due to the different display and different light, the picture may not show the actual color of the item. Thanks for your understanding. Included: 1 X ESP-32 ESP32S WiFi Bluetooth Development Board.The entire solution takes up the least amount of printed circuit board area. Due to the different display and different light, the picture may not show the actual color of the item. If item is defective after 3 months, you can still send it back to us.