1This product is very suitable for golf and golf ranging 2Uses precise optics and digital technology to measure distances, brightened the view with higher definition, and longer measuring distance. 3High technique supported comes to stable measuring results, wearresistance with longer service time. 4Handy and portable, accurate speed and distance measurement, low deviation. 5Green mode and general mode for choosing, with this green mode, you can test the distance from you to the hole easily. You're worth it. Features: This product is very suitable for golf and golf ranging. Uses precise optics and digital technology to measure distances, brightened the view with higher definition, and longer measuring distance. High technique supported comes to stable measuring results, wear-resistance with longer service time. Handy and portable, accurate speed and distance measurement, low deviation. Green mode and general mode for choosing, with this green mode, you can test the distance from you to the hole easily. You're worth it. This product is different from the laser rangefinder measurement, is an accurate optical and digital technology was used to measure the distance, it don't have any energy in the form of radiation, within the measuring distance, there is no any damage and destruction.