Navigation from place-to-level can be done by using waypoints. Line of sight navigation is usually attainable by just pointing the unit in a geographical feature or in a certain route and shifting to it. ??nh v? mini không dây Qbit tích h?p nút g?i kh?n c?p SOS nh?m báo t?i s? ?i?n tho?i ng??i thân trong tr??ng h?p g?p nguy Hello?m. Ch? c?n