New GPS navigation unit with wide range of multi-tasking possibilities has been released recently in Korean market. G1 of I-NAVI is a compact GPS navigation unit with tons of advanced features embedded in its body. G1 of I-NAVI has a large 7 inch 800*480 pixel high resolution and non-glare type LCD which greatly enhancing readability to use during the day.
The most sophisticated feature are G-Sensor(Geomagnetic sensor: 3 axis sensor detecting absolute direction of north pole and heading direction of automobile) and Gravity Sensor(3 axis sensor sensing motion by using vector of X, Y, Z). You will get more accurate navigation with a combination of I-NAVI map and map matching engine. Apparently those feature are compromised any distortion of direction in underground passage, overpass, slowdown area and multi-pass area nor losing of GPS signals and recalculated the map to display the most accurate position.