This High-tech professional Laser rangefinder Telescope is very durable,and be able to rapidly and accurately measure the range of the target by emitting invisible,eye safe,and infrared energy pulses.With Visionking new Laser technology,the range finder has 3 model in side that user can choose it when use it:Turn on mode “golf”,it will measure the golf flag as a priority,so it is will get distance faster,it will better than old range finder without this function;Turn on mode “hunting”,it will measure the animals as a priority.