If you're after the brightest optics for absolutely unparalleled performance at night or in low light conditions, consider the brightest binocular made: the Commander XP. Steiner has created new HD (High Definition) optics that deliver over 96% peak light transmission - the highest ever recorded. XP Optics is a high definition, broad band optical formula that features record setting light transmission for times in the dark and clear, sharp, high contrast and comfortable images in daylight. In addition to the XP Optics, is a new high-tech optical coating on both the objective and eyepieces called "NANO Protection". This new coating repels water and moisture off the lenses leaving them clear of water or moisture. Combined with the bright and steady 7 x 50 configuration, you get nighttime images so brilliant, it's almost like turning on a spotlight. Each Commander XP is hand-built to be mil spec waterproof and shock resistant. Weight: 37 oz. Field of view: 390 feet @ 1000 yards. Eye relief: 22mm. Dimensions: 5.2" L x 8.2" W x 2.8" H. IP (Inter Pupil) Distance: 56-74mm.