Auto GPS systems
GPS systems are of two types – handheld GPS system and auto GPS systems. Handheld GPS system or receiver is user friendly as it is not so lightweight and one can easily hold it right with his or her hand. The screens are small and are not always colored, i.e., they can be black and white. The batteries they contain are generally long lasting, as the small sized screens do not waste much energy. Those GPS receivers that are made for outdoor usage usually contain materials to resist water penetration.