Development Board for ESP32 S3 SIM7670G 4G LTE Cat‑1 2.4G WiFi Bluetooth LE 5.0 GNSS Development Board Item Type: Development Board Material: PCB Supported Frequency Bands: LTE FDD: B1, B2, B3, B4, B5, B7, B8, B12, B13, B18, B19, B20, B25, B26, B28, B66 LTE TDD: B34, B38, B39, B40, B41 GNSS: GPS, Beidou, GLONASS, Galileo Battery Specification: 1 x Battery (not Included) Powered By: High Performance 32 Bit LX7 Dual Core Processor Up to 240 MHz Support: 2.4 GHz WiFi (802.11 b/g/n) and Bluetooth 5 (LE), Onboard Antenna Internal: 512KB SRAM and 384KB ROM, 2MB PSRAM Overlay and 16MB External Flash Memory Card: Up to 32G (not Included) Size: Approx. 34x31.6x125mm / 1.3x1.2x4.9in