, exquisite, compact, and convenient More powerful than just appearance and performance Car mounted 0.96-inch 128 * 64 dot OLED display screen, capable of displaying debugging information, battery level, and other information Support for development environment Main control chip: ESP32-S3FN8 USB to serial chip: CP2102 Wifi: 802.11b/g, up to 150bps BLE: Bluetooth LE: Bluetooth 5. Bluetooth mesh : 7*ADC1+2*ADC2; 3*UART, 2*I2c; 2*SPI Interface: Type-c; 2*1.25 battery interface; 2*18*2.54 pins Battery: Supports 3.7v lithium battery charging and discharging Temperature: 20~70 Power consumption: deep sleep 10A Due to different batches, there may be differences in product appearance and printed text, which will not affect use Colour:As Shown Material:ABS Package Contents: 1 x Development Board kit 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.