Bresser TruView 800 Rangefinder. The device offers a combination of multi-coated optics 21mm objective lens and 4x magnification to generate bright images that allow for quick target acquisition. Powered by a 9-volt battery the laser rangefinder also has 12mm of eye relief and comes with a carry case lanyard and lens cloth. Specifications for Bresser TruView 800 Laser Rangefinder: Manufacturer: Bresser Objective Lens Diameter: 21 mm Magnification: 4 x Eye Relief: 12 mm Maximum Range: 800 yds Color: Black Rangefinder Application: Hunting Condition: New Magnification Type: Fixed Package Contents: Bresser TruView 800 Laser Rangefinder Operating at split-second speeds the Bresser TrueView LR800 laser rangefinder makes it easy to determine the precise distance between you and your target. Compact and housed in a rugged non-slip rubber armoring the LR800 uses a three-barrel design to accurately measure distances of up to 800 yards and display the results using a clear LCD readout. The device offers a combination of multi-coated optics 21mm objective lens and 4x magnification to generate bright images that allow for quick target acquisition. Powered by a 9-volt battery the laser rangefinder also has 12mm of eye relief and comes with a carry case lanyard and lens cloth.