... different weather, different circumstance, high precision, fully coated 15-400m laser range finder, patent technology, fit for different weather, different ... precision, fully coated1 Ranging distance15-400m2 Ranging method: semiconductor laser (harmless to eyes)3 Ranging error±1m±0.1%4 ... Power: CR-23V14 Dimension: 120X85X47mm15 Weight 170g16 Waterproofness: No distance measuring binoculars 15-400m