Detailed Product Description *Built-in powerful road survey and design software, simple operation*Sufficient memory space available for data storage can store 24000 observation points24000 points of coordinates*Special durable, dust-proof grade level up to IP66*Equipment, long-lasting battery (BT-52QA), operating time up to 10 hoursGTS-332N SeriesAccuracy2,2+2ppmMeasuring Range3.0km/1pGTS-335N ...