Includes: GPS with Compass module Protective case Four-position cable (compass) Five-position-to-six-position cable (GPS) for APM or PX4 Pixhawk users will find a six-position cable included with the Pixhawk kit to connect the GPS with Compass module to Pixhawk. If you need a second cable to connect the GPS with Compass to Pixhawk, please add the six-position cable here to your order. Options: Add a GPS mast to improve the performance of the GPS with compass module. Documentation and User Guides Features and Specifications: ublox LEA-6H module 5 Hz update rate 25 x 25 x 4 mm ceramic patch antenna LNA and SAW filter Rechargeable 3V lithium backup battery Low noise 3.3V regulator I2C EEPROM for configuration storage Power and fix indicator LEDs Protective case APM compatible 6-pin DF13 connector Exposed RX, TX, 5V and GND pad 38 x 38 x 8.5 mm total size, 16.8 grams.