Nikon ProStaff Laser 440 Rangefinder At only 3.7" x 1.6" x 2.8", the performance-packed, water-resistant ProStaff Laser 440 features Nikon's original digital processor for a true reading on game, even if partially screened by grass or brush. Offering 1/2-yard accuracy and pocket-sized portability, the Laser 440 integrates 8X multicoated optics and a focusing diopter. Battery included. 400-yd. range. Size: 3.7" x 1.6" x 2.8".