The laser Callaway Diablo Octane Rangefinder provides quick and accurate distance measurement up to 550 yards (500 meters) and features First Target Priority Mode, allowing you to measure the distance to the pin on a green with woods in the background.

Additional features:

• Fast, simple one-touch measurements
• 6X Monocular
• Waterproof - filled with nitrogen gas, sealed with O-rings (except battery chamber)
• Multi-coated optics
• Long Eye Relief and folding rubber eyecup for eyeglass-wearer easy viewing
• Focusing diopter by simple twisting action on eyepiece
• Reticle allows users to know ranging in progress LCD display
• Capable of distancing different targets in succession for up to eight seconds
• Compact, lightweight design
• Carabiner built-in for ease of access with all walking bags and tour bags
• Includes 3-volt CR2 lithium battery
• New slim Turbostraic case with independent carabiner attaches to unit directly on the eyelet
• Point and shoot technology for quick, accurate readings 550 yards of range and within +/- .5 yards out to 100 yards
• Waterproof housing prevents damage from the elements
• Range objects on any course or any range without download or subscriptions