Focusing: eyepiece focusing
Measure theory: semi-conductor laser, no harm to eyes
Measure distance: 20m-1000m
Measure speed: <300km/h
Measure tolerance: +/-1 m; +/- 0.2%
                         +/- 5 km/h
Reading: LCD
Size: 121x127x58 mm
Weight: 472g
Battery: 1x6F22 (9V)
Tripod screw: 1/4"
Modes: standard, >100m, speed three modes
Reticule: 3 kinds changeable
Memory function: last 10 readings recall
Basic speed measure: for objective moving backward or forwarder