Feature:

• Voltage: 3.3 V, 5 V
• Size: 36mm * 24mm
• Ublox / u-blox NEO-6M GPS module with antenna and built-in EEPROM This module is compatible with APM2 and APM2.5, and the EEPROM can store all of your configuration data.
• Interface: RS232 TTL
• Power: 3-5v
• Baud rate Default: 9600bps
• No battery (this is not safe for airmail) Battery model is MS621FE, requires soldering