LaserWorks LW1000SPI Laser Rangefinder for Hunting and Golf,Fog Measurement,Waterproof High Measure Performance: 5-1000 yards performance, furthermore 1600 yards for highly reflective target. Powerful optical 6X magnification. Lightning fast measurement. Superior Functional: Measure distance, speed, flagpoles locking, fog mode, scanning continuous measurement. Excellent Quailty: Seal deal with a water and dust resistant, durable body, perfect for carrying while golfing or hunting, or for measuring and surveying. So Simple Operation: Totally One-key to measure, One-key to switch mode. Auto power-off in 15 seconds inactivity. Incredibly Compact: It is about the same size as a small candy bar, completely palm and pocket friendly. Class I laser product,Maximum average radiant power:70.1W, no harm for human health. Distance: 5 to1000m distance performance, furthermore 1600 yards for highly reflective target. The error is as low as +/- 1M. Speed: Easy to measure speed winthin 300KM/H. Flagpole Locking: Lightning separate the flagpole or other targets from busy littery background. Fog Mode: Do not worry the fog, the Fog Mode makes your hunting or golf without a hitch. Scanning measure: One-key to start measure 20 times continuously to display every distance scanned.