WeMos ESP32 WIFI Bluetooth Development Board with 0.96inch OLED CP2102

The ESP-WROOM-32 system
Flash memory: 512 kb
Clock timing: up to 240 MHz
WiFi standard: 802.11 b / g / n / d / e / i / k / y
Bandwidth: from 2.412 GHz to 2.484 GHz
Bluetooth standard: Bluetooth v4.2
Wi-Fi security: WEP, WPA / WPA2, PSK / Enterprise, AES / SHA2 / Elliptical Curve Cryptography / RSA-4096
MicroUSB connector for power supply and programming
2 buttons: Enable and Boot
Power supply voltage: from 3.3 V
Goldpin connectors, 2.54 mm pitch (in the set, solder required)
Dimensions: 64 x 28 x 8 mm (without connectors)
Included
IoT Wi-Fi / BT development board with ESP32 chip and 0.96 “OLED display
Gold pin connector for self-soldering