Product Details Bushnell Yardage Pro Sport features 1-button operation and advanced digital technology. Recommended for bow and big game hunting. Superb performance in 5-800 yard range. 4x magnification. Accurate to within 1 yard even in rain snow and foreground clutter. Water resistant. Class 1 eye safe laser. Requires 1 9v battery sold separately. Size: 1.7 x 4 x 3.13″. Weighs 7.4oz (210g). Mfr. 1 year warranty.