Features: A7670E Cat1/GNSS HAT is Cat1 module that supports wireless communication such as LTE GPRS etc, Supports up to 10Mbps downlink rate and 5Mbps rate The module supports operating system supports multiple networking protocols, the same size as the SIM7000/SIM7070 series. Most AT instructions are for SIM7600 series, Strong compatibility, suitable for IoTs applications such as remote information processing, monitorings equipment, industrial routers, remote diagnosis, satellite positioning, etc. Based On for RPi 40PIN GPIO interfaces, suitable for RPi series motherboards Supports text to speech function, which can convert Chinese or English text to speech output through onboards USB interfaces. can use to test onboards interfaces such as AT commands and networking communication to headphones for recording, making call, and voice playing Specifications: Model: A7670E Type：Cat1/GPRS/GNSS HAT for RPI Board Support：Cat1 GNSS positioning Package Includes: 1 Set A7670E Expansion Board note: Please allow 1-3mm error due to manual measurement. please make sure do not mind before bid. Due to the differences between different monitors, the picture may not reflect the actual color . Thank you!