1、Powerful Wireless Performance: This ESP32 development board supports 802.11n WiFi with speeds up to 150 Mbps, and complies with Bluetooth v4.2 BR/EDR and BLE standards, providing a fast and stable wireless connection for your devices, ensuring both network speed and robust connectivity. 2、Convenient Power Design: The development board features DC 3.6V to 5V power input and includes a lithium battery holder for easy external power connection and management. The module also supports charging the battery while operating, ensuring efficient and reliable power supply. 3、Premium Sound Processing: Supporting CVSD and for SBC sound formats, this ESP WROOM 32 microcontroller maintains clear sound transmission even in high noise environments, making it suitable for applications like voice communicating and voice control. 4、High Flexibility: With rich peripheral interfaces and powerful processing capabilities, combined with a highly customizable system, this ESP WROOM 32 development board can meet a variety of requirements. 5、Wide Range of Applications: The ESP32 development board supports multiple protocols and operating modes, making it suitable for various IoT applications such as smart homes, industrial automation, and environmental monitoring. Item Type: ESP32 Development Board Material: PCB Weight: Approx. 36g/1.3oz Power Supply Voltage: DC 3.6V to 5V input Onboard Battery Holder: 1 x lithium battery (not included), module can charge the battery while working WiFi Protocol: 802.11 b g n d e i k r (802.11n, up to 150 Mbps), A MPDU and A MSDU aggregation, 0.4us guard interval supported Frequency Range: 2.4 to 2.5 GHz Bluetooth Protocol: Compliant with Bluetooth v4.2 BR/EDR and BLE standards Bluetooth Sound: CVSD and for SBC sound 1 x ESP32 Development Board 2 x Pins 1 x User Manual