Established in 2006, as Venture manufacture company in South Korea, ISTT provides Anti-glare GPS sun visor for navigation/GPS/Smart phone/Smart PC device as functional accessory. This Anti-Glare GPS Sun Shade Visor is designed to block unwanted sun light from the top and sides of the screen of 4.3inch GPS devices. Also, it reduces glare and reflections for better contrast and visibility in terms of function. The new product is inspired in 3 kinds of design concept. The first, it is looks good your GPS Unit like as upgrade-accessory. The second it is perfect compatibility to be base on LCD screen size, such as 3.5inch, 4.3inch, 5inch, 7inch, iPhone of display screen size. Finally, it is easy install/remove from all GPS unit without surface scratch. Our products have the international patent as well as the originality product for GPS accessories.