T-SIM7670G Parameters: MCU: ESP32-53 LTE&GSM: SIM7670G TF Card slot SIM7670G Composition: LCC+LGA SIM7670G Use area: Global ESP32-S3 Parameters: Clock frequency: 240Mhz Flash: 16MB PSRAM: 8MB Supported wireless communication protocols: 2.4 GHz Wi-Fi (802.11 b/g), Bluetooth 5 (LE) Serial bus communication protocols: , SPI, UART, SDIO, I2S, CAN SIM7670G Parameters: Frequency: LTE-FDD: B1/B2/B3/B4/B5/B7/B8//B13/B18/B19/B20/B25/B26/B28/B66 LTE-TDD: B34/B38/B39/B40/B41 Data transmission: Download speed: 10Mbps, Upload speed: 5Mbps GNSS: NA Supported protocols: IP/IPV4/IPV6/Multi-PDP/ FTPS/HTTP/HTTPS/DNS/ Android RlL: Android 5.0/6.0/7.0/8.0/9.0 USB driver: 7/8/10, Linux, Android Supported voltage: 3.4~4.2V Card: 1.8V/3.0V (The product printed words depending on the batch, but this does not affect use) Color: As Shown Material: PCB+Electronic Components Package Contents: 1 * development board With accessories Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.