Waveshare ESP32 3.5inch Rounded Corner Touch LCD Development Board, 320 × 480, Onboard Audio Codec Chip, Built-in Microphone and Speaker, Supports Wi-Fi and BLE, with BAT

High-Performance Processor: Powered by the ESP32 Xtensa 32-bit LX6 processor, offering both single-core and dual-core options with a main frequency of up to 240MHz, ensuring robust performance for a variety of applications.
Comprehensive Wireless Connectivity: Supports 2.4GHz Wi-Fi (IEEE 802.11b/g/n) and Bluetooth V4.2, including both traditional Bluetooth (BR/EDR) and Bluetooth Low Energy (BLE), with an onboard antenna for reliable and fast wireless communication.
Ample Memory and Storage: Built-in 520KB Static RAM, 448KB ROM, and 2MB PSRAM, with an additional external 16MB Flash memory and a TF card slot for expandable storage, ensuring smooth operation and ample space for data storage.
Interactive Touch Display: Features a 3.5-inch capacitive touch IPS display with 320 × 480 resolution and 262K colors, powered by an ST7796 display driver and FT6336 capacitive touch chip, offering clear visuals and efficient SPI and I2C communication for low IO usage.
Advanced Power Management: Integrates a PCF85063 RTC chip powered by a lithium battery through the AXP2101 chip, with a backup battery header to maintain RTC functionality during battery replacement. Includes a 3.7V MX1.25 Lithium battery recharge/discharge header for convenient power management and optimization.