As a portable GPS Langshi-A28 is categorized as the cheap one. It has a small 2.8-inch screen with 103 × 70 × 18mm in three dimensions make it has very good cost control and easily carry. Although cheap, Langshi-A28 navigation function and the mainstream GPS is little difference. And if you do not need too many advanced navigation features, this product is inexpensive choice. But if we look more further, the small screen could give bad impact for the navigation information. Langshi-A28 able in black and white appearance. Langston manufacture company who produce Langshi-A28 stated that this small GPS has breaking the price limit in Hongkong. It is now sell at price 498 yuan.