1,Patrolling detector 2,Completely shock resst 3,10,000 records stroage 4,Low power consumption 5 years warranty,one year free exchange for quality!Completely Shock resist and waterproof Guard tour patrol system1,Ruggedness :superiorly,still normal use after fall from high altitude2,Advancement:three patent technologies,reading point short circuit technique,3,Make sure long term usage of the ...