This is one of the most rugged design we have developed, seen or even used. It has a Black Rubberized Dimple coating for extra durability. One major difference is this laser is made with a Japanese lens which is superior over the Chinese lenses found in the $36.95 models. The 30mw has a range of up to 8 miles!! This is a real dream for the green laser users. It is certainly a next generation of green laser designs and performance. This green laser pointer is the only choice for presentations, science courses, research labs, military, bird watching, tree experts, law enforcement plus so much more.