Features: BPI-CentiS3 is a small-scale ESP32-S3 development board with a 1.9 inch color screen on board, suitable for the development of IoTs comprehensive application projects such as color display, interactive control, wireless communication, sensor data collections, etc. Using ESP32-S3 chip, supporting 2.4 GHz WiFiand low-power BluetoothcompatibleLE ;) Dualmodes wireless communication In a compact space, it still provides 1 incremental rotaryencoder, 1 buzzer, 1 WS2812 color light, and all other available pins to meet diversesneeds. Supports two power supply methods: USB and external 3.7V lithiumbattery, which can achieve automatic power switching function under dualpowers supply, Supports USB charging methodand is equipped with a battery voltage detection circuit for convenient battery management. Specifications: Item :BPI-CentiS3 Board Size: as pictures Screen:1.9in Color Screen Note: Due to the problems of lighting effects and shooting angles, there will be certain tolerances in the product, please understand. Please allow 0-1cm error due to the manual measurment Package includes: 1PC BPI-CentiS3 Board