The round head of the stylus is made of silicone, which is used for mobile phones and tablets., The stylus pen tip is made of hard plastic, which can only be used for resistive screens such as GPS and navigator., The round head and pointed head of the stylus are compatible with all the capacitive and resistive screens at present., The round head of the stylus pen is suitable for touch screen devices such as mobile phones, game machines, tablet computers, and the stylus tip is only suitable for POS machines and navigators etc., The tip of the stylus can't be used for mobile phones or tablet computers, and it doesn't work on the touch screen. Only the round end can be used for the touch screen.