● Rugged ABS+ PC case, heavy duty, crash resistant. ● Smart, firm, portable and can be used as xed device. ● High accuracy. ● Friendly easy to use. ● Compact size, light weight. ● Water and dustproof ( standard IP65 ). ● Intrinsically safe device, it can be used in potential explosive environment. ● Microcomputer circuit,intelligent function. ● High capacity chip, 4 layers PCB board. ● Audible and visible alarm. ● High & low alarm point, fully adjustable. ● USB interface. ● Low battery alarm. ● Stainless steel belt clip.