만능고도계 GPS (해발고도계, 위성고도계, 기압계)

★★ Key Features ★★
＊ Show current location satellite map
＊ Moving route and speed information monitoring
＊ Provide altitude information above sea level
＊ Provide altitude information based on AGL
＊ Provide latitude / longitude information
＊ Pressure information