Description:
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.
This board is used with dual-mode Wi-Fi and Bluetooth chips, which is safe, reliable, and scalable to a variety of applications. 

  Specification:
DC 5V-12V 
A Micro USB connection
Compatible with for Arduino
D1 R32=WiFi+Bluetooth+UNO
Size: 6.8x5.3cm/2.68x2.09inch

Note:
1.Please allow 1-2cm error due to manual measurement. pls make sure you do not mind before you bid.
2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. 

Package Included:
1* UNO R3 ESP32 Board