The RifleHunter 1000 Laser Rangefinder offers improved light transmittance and new technology that detects the brightness of the target itself and automatically adjusts the reticle either to gray LCD or orange LED for maximized visibility and contrast. Nikon’s advanced ID Technology compensates for various incline or decline shooting angles—up to an incredible +/- 89 degrees (nearly vertical up or down). This will be a great purchase. Simple to use and that’s important when your pumped up trying to range that big buck or bull. Very accurate ranges and awesome features: monocle lights up red when in low light and dims if your looking towards sun to protect your eye. Best of all it is super lightweight. And its a Nikon, you cant go wrong.