The Bushnell Custom Series 4x21 Laser Rangefinder is a Gander Mountain Exclusive line engineered specifically for outdoors users who demand precision, high-end features, exceptional performance, and market-leading value. Head-to-head, ounce-for-ounce, these optics deliver superior performance in their class. The Custom Laser Rangefinder delivers 10- to 600-yd. performance on reflective targets with +/- 1-yd. accuracy. Simple and easy-to-use thanks to its one-button operation. With lightning-quick measurement capability, the Custom Laser Rangefinder delivers all the features enthusiasts need and the industry-leading performance they expect.