The Callaway IQ Rangefinder from Nikon is custom made for the golf course. The Active Brightness Control viewfinder offers the advantages of both conventional LCD and LED display, providing better visibility and contrast in varying light conditions. This feature detects the brightness of the field of view and self-adjusts the image back and forth from a grey LCD to an orange lighted by a LED for the best viewing possible. The IQ Rangefinder calculates the distance by taking the uphill or downhill slope into account thereby giving a much more accurate reading for selecting the right club. It has a generous range of 11-915 yards with a very precise increment adjustment of only 0.1 of a yard. Besides the actual distance, the slope adjusted distance is also displayed. You'll have all the info you need to make that perfect shot. The Callaway IQ Rangefinder utilizes a one-touch technology coupled with Nikon's First Target Priority Mode. There is an automatic shut-off after 8 seconds. Waterproof, fogproof and with superior multicoated Nikon optics, this is one rangefinder to have with you on the links or anywhere you want fast and accurate distance acquisition.