There are still many differences between TS06 and TS802: TS02 has 24,000 storage fixed points, while TS06 and TS09 have 100000 fixed points; The ranging accuracy is improved from 2mm+2ppm to1.5mm+2ppm; The lithium battery is changed from the original 6-8 hours/single charge to 20 hours/single point; The transmission mode is increased from the original data cable to dual USB storage (1G) and some models have Bluetooth function; Instrument calibration can be customized; One prism constant customization is increased to two prism constants customization; Keyboard and screen also have some functions; There are many functions of airborne software, TS02 has 30m prism-free function, 06 and 09 have 30m prism-free measurement function besides prism-free measurement function, and Leica total station has many unique features, such as laser centering, infinite friction braking and biaxial electronic compensation, so Leica's slogan is: often imitated, never surpassed!