gon, meter or feet, us/ft-international Distance measurement: 1 prism: 9, 900, 3 prism: 13, 200, 9 prism: 16, 400 Distance measurement precision: ±(2mm+2pmm) Distance measuring time: 3s+every 0.4s tracking mode Distance measuring time: 3s+every 0.7s coarse mode Distance measuring time: 4s+every 1.2s fine mode Distance minimum display: 1mm/0.003ft Display: dual Internal memory: 8000 points or 16000 layout data Data input/output: rs-232c Compensator: liquid dual axis Compensating range/accuracy: ±3/1 Optical plummet: erect 3x Waterproof: ipx6 Weight: 4.9kg, 10.8lbs including tribrach and battery In box (fedex, ups, tnt, ems, dhl)