The Range Finder is a function-enhanced models for sports, with Range/Angle/Flag-lock/Slope distance correction, can help you to find the distance to flags, trees or hazards. You don't need to the distance any more. This rangefinder will bring you a good game experience. Feature - Color: White - Material: ABS - Size: 10.5x7.2x4cm - Maximum Measuring Distance: 300-400M - Accuracy: plusmn;1M - Magnification: 6X - Unit Selection: Meter, Yard - Objective Lens Diameter: 24mm - Eyepiece Aperture: 16mm - Power Supply: CR2-3 lithium battery(Not included) - Measuring up to 400 meters with continuous scan mode and a durable, water resistant body - Range finder binoculars is a portable rangefinder binoculars plus optical instruments. - A combination of telescope ranging capabilities. - Has high accuracy, short time distance measurement from visual display power consumption and automatic power-off and other advantages.