Features:Adopting high specification craft, carefully welding, precise hole position, complete functions.The installation is simple and does not require particularly complicated operations.Color screen, new custom buttons, add battery-powered charging circuit, low power consumption.This product is made of high quality PCB material, strong and durable.Suitable for development board, it can interact with many software such as for Processing, for Max/MSP, for Pure Data, for VVVV.Specification:Item Type: Development BoardMaterial: PCBSize: Approx. 51.52 x 25.04 x 8.54mm / 2.03 x 0.99 x 0.34inchWeight: Approx. 7.81g / 0.3ozHardware Specifications:Chipset: For ESPRESSIF-ESP32 240MHz Xtensa? single-/dual-core 32-bit LX6 microprocessorFlash: For QSPI flash 4MBSRAM: 520 kB SRAMButton: ResetUSB to TTL: CP2104Modular Interface: UART, SPI, SDIO, I2C, LED PWM, TV PWM, I2S, IRGPIO, ADC, capacitor touch sensor, DACLNA pre-amplifierDisplay: IPS ST7789V 1.14 InchWorking Voltage: 2.7V-4.2VWorking Current: Approx. 60MASleep Current: Approx. 120uAWorking Temperature Range: -40℃-+85℃Power Supply Specifications:Power Supply: USB 5V/1ACharging Current: 500mABattery: 3.7V lithium batteryJST Connector: 2Pin 1.25mm/0.05inchWi-Fi Standard: FCC/CE-RED/IC/TELEC/KCC/SRRC/NCC(esp32 chip)Protocol: 802.11 b/g/n (802.11n, speed up to 150Mbps) A-MPDU and A-MSDU polymerization, support 0.4μS Protection intervalFrequency Range: 2.4GHz-2.5GHz (2400M-2483.5M)Transmit Power: 22dBmCommunication Distance: Approx. 300m / 984.25ftBluetooth Protocol: Meet Bluetooth v4.2BR/EDR and BLE standardRadio Frequency: With -97dBm sensitivity NZIF receiver Class-1, Class-2&Class-3 emitter AFHAudio Frequency: CVSD&SBC audio frequencySoftware Specification:Wi-Fi Mode: Station/SoftAP/SoftAP+Station/P2PSecurity Mechanism: WPA/WPA2/WPA2-Enterprise/WPSEncryption Type: AES/RSA/ECC/SHAFirmware Upgrade: UART download/OTA(Through network/host to download and write firmware)Software Development: Support cloud server development /SDK for user firmware developmentNetworking Protocol: IPv4, IPv6, SSL, TCP/UDP/HTTP/FTP/MQTTUser Configuration: AT + Instruction set, cloud server, for Android/iOS appOS: For FreeRTOSPackage List:1 x Module2 x Pin1 x Connect Cable.