Fully optical and waterproof binoculars K-S10×42DCF-Waterproof BinocularsSpecifications:Magnification: 10XObjective diameter: 42mmAngular field of view: 5.2°Close focus: 3mExit pupil diameter: 4.2mmExit pupil distance: 15mmPacking detailSoft pouch,Instruction book, lens cleaner,drier, packing box Soft pouch,Instruction book, lens cleaner,drier, packing box binoculars