Nothing is more aggravating (and sometimes dangerous) than a lost phone signal or low battery when getting directions. The fact remains that a smartphone or GPS cannot be counted on for directions 100% of the time. That is why you should always keep tried and true technology with you. Our Lensatic Compass has no batteries to charge, no satellite signal to lose and works in all weather. It is virtually fail proof. Features include a strong cast aluminum case, a magnifying leans and sight groove (could be used to start a fire on a sunny day), scale edge and thumb loop all make for and accurate read.