The board is assembled with a uBLOX MAX-M8C-10 module, chip antenna and a decoupling capacitors.

This board has VCC, GND and RX & TX, SCL & SDA for I2C. 

IMPORTANT : This module has no onboard voltage regulation so a clean regulated 1.8 - 3.6v power is required. If you want to link this to your microcontroller you must ensure it runs at 1.8 to 3.6v on the serial/I2C or you will risk damaging this module. Arduinos/PC Serial generally run at 5V so you will need a level converter.

There is no provision for battery backup (V_BCKUP is hard tied to VCC).

The MAX-8 family delivers all the benefits of the u-blox 8 GPS platform in a more compact form factor than ever before: high-sensitivity, intelligent power management.

MAX comes in an ultra-compact, easy-to-mount 9.7mm x 10.1mm LCC package, and supports temperatures down to -40'C.

• Supports temperatures down to -40'C
• UART interface.
• RTC crystal for faster warm and hot starts
• Suitable for HAB Usage Max Altitude 50,000 meters / 164041 feet  in Flight Mode.
• Supply Voltage 1.8 to 3.6V

This module is designed to be as light as possible, weight is very light at 1.5g