Set of Heading RTKite GNSS L1+L2 Receiver for double GNSS antenna Version 1.0 TTL, with Bluetooth, SIM Card port, GSM/GPRS/3G modem, 3G antenna, IMU port input, SD Card slot, I/O port, 4 signal LEDs and all the accessories and software needed for operation, 1 month of Technical Support, 1 Year of Warranty and Lifetime firmware upgrades. Select this set to use another type of GNSS Antenna.