Features:
Made of high quality material, sturdy and durable.
It supports WiFi/Bluetooth, onboard with 1.44-inch TFT display, 2-channel touch button, supports TF card reading and writing, comes with 1W speaker, also can play PCM music.
Onboard CP2102 stable USB to TTL chip to ensure normal communication of the serial port.
Equipped with automatic download, there is no need to manually switch the download and run mode.
Suitable for Windows systems (cygwin and msys32 emulation environments) and development on Linux systems.
Support ESP32-Arduino.
Increase the battery power supply charging circuit, low consumption and convenient.

Specification:
Material: Fiber glass fabric + Electronic component
Size: 51.5 x 25 x 8.5mm/2.03 x 0.98 x 0.33in
Display: IPS ST7789V 1.14 Inch
Power supply: USB 5V/1A
Charging current: 500mA
Battery: 3.7V lithium battery
Working voltage: 2.7-4.2V
Working current: app.67mA
Sleep current: app.350uA
Working temperature range: -40 - +85℃/-40 - +185℉
JST Connector: 2Pin 1.25mm
Communication distance: 300m
USB: Type-C
Battery: 3.7V lithium battery
Color: As picture shown
Quantity: 1 Set