Instrument features: dustproof and waterproof grade IP65, can withstand the harsh operating environment; single block of internal lithium battery can work 14 hours, standard 2 lithium battery provides 28 hours of prolonged power; optional external battery provides 38.5 hours of prolonged power; RED-tech EX EDM to ensure accuracy with prism distance measurement and non-prism distance measurement, without prisms range from a minimum of 0.3m to the farthest 500m; integrated Windows CE operating system and high-definition TFT LCD color touch screen; variety of data transmission interfaces and Sokkia's unique SFX field data courier system can support seamless data transmission and processing; quick trigger key, the sight of the operator will be able to operate without having to leave the telescope eyepiece micro- Spiral sighting target, and the measurements; standard configuration guide light Sokkia high definition, easy to use lofting operates; This series Total Station with 1 ", 2", 3 "and 5" angle measurement accuracy class 4 , 1 "and 2" Total Station SOKKIA using a separate unique perspective correction system (IACS), to ensure stable unprecedented angle measurement. Telescope tube length: 173mm Objective aperture: 45mm (EDM: 48mm) Magnification: 30 × Erect Field: 1 ° 30 'Resolution: 2.5 "Minimum focus: 1.3m Angle measurement unit: absolute encoder plate on the dial diameter detector angle measurement accuracy: 1 "Minimum reading: 0.5" / 1 IACS (angle self-calibration system): Angled Type: horizontal: HR / HL optional vertical angle: Zenith 0 / Horizontal 0 / horizontal ± 90 ° /% slope optional compensation type: Liquid-axis tilt sensor, compensation range: ± 3 "odometry Prism * 1 (Kodak gray card): 0.3 ~ 250m (gray surface, 18% reflectivity) reflective sheet * 2: RS90N-K: 1.3 ~ 500m mini prism: CP01: 1.3 ~ 2500m, OR1PA: 1.3 ~ 500m standard single AP prism: AP01: 1.3 ~ 5000m / good weather conditions: 1.3 ~ 6000m three AP Standard Prism: ~ 8000m / good weather conditions: ~ 10000m distance range accuracy: 0.3 ~ 200M: (3 +2 ppm × D) mm Prism * 1 / * 5 precision measurement: 350 ~ 500m: (10 +10 ppm × D) mm Prism * 1 / * 5 rough measurement: 350 ~ 500m: (15 +10 ppm × D) mm reflector * 2: Fine: (3 +2 ppm × D) mm, coarse (6 +2 ppm × D) CPS12 fine measuring prism system: (1.5 +2 ppm × D) mm prism rough measurement: (5 +2 ppm × D) mm Operating System Operating System: WindowsCE data storage memory: 64M data storage card: CF Card (1GB), SD Card (must CF adapter) Interface: RS232 serial port monitor: single 324 × 240 dot matrix, with backlight LCD color touch display Keyboard: 32-key alphanumeric keypad with backlight other guiding light: single-color light-emitting diode, an LED product Optical Plummet : Magnification: 5.5X durability Ingress protection: IP65 (ICE 60529:2001) Operating temperature: -20 ℃ ~ +50 ℃ Power, battery BDC58: 4.3Ah rechargeable lithium battery 2 BDC56B: 2.45Ah rechargeable lithium Battery Auto Shutdown: 5/10/15/30 minutes without operation / manual, optional