This new and innovatively designed WAAS/EGNOS enabled unit from Haicom will connect to virtually any device via Compact Flash, Serial, USB or bespoke PDA port to add GPS functionality. The unit incorporates the SiRF chipset and provides high sensitivity to satellite signals. The unique hinge design allows the MMF to fold from 180 to 0 degrees to accommodate the best satellite receiving angle so that you're unlikely to require the optional external antenna. Furthermore, the unit also contains an internal Lithuim battery for a faster warm start. The unit is sold without any bundled mapping software which allows total flexibility in selecting appropriate software for your particular application and operating system.