The Callaway Diablo Octane quickly and accurately measures distances up to 550 yards with its 6x magnifier. The Diablo uses Nikon optics which provides clear, crisp images. This rangefinder is great at picking up the pin with woods in the back. It is easy to use while wearing glasses, is waterproof and very lightweight.
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Features and Specifications:
- 6x monocular distance measurement; superior Nikon optics
- Fast, simple one-touch measurements
- Nikon’s First Target Priority mode targets the pin, bunker, or closer objects even with trees in the background.
- Waterproof and fogproof; 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 8 seconds
- Compact, lightweight design
- New slim-stratic sleeve utilizes an independent bag clip that stabilizes to rangefinder
- Carabiner built-in for ease of access with all walking bags and tour bags
- Includes 3 volt CR2 lithium battery
- Can measure distances to targets in succession for up to 8 seconds with just one button
Customer Reviews:
“This Callaway Rangefinder is as good as it gets. Light weight, fast, accurate and reasonably priced. It has a clear viewfinder, picks up the flag or object very quickly and is as accurate as anything on the market. Callaway got it right with this baby. It beats the Bushnell (V2)hands down at a better price with better feautures. I don’t miss my old GPS unit at all and am very happy with my purchased.” 
“I love this rangefinder, it is just the right size for a man to grip. The 6 X magnification makes it easy to zero in on a target and the large LCD display is easy to read even for a guy with glasses and bifocals. I am very satisfied with this unit and would purchase it again on Amazon which had the best price!”
“This is my 1st Rangefinder, so I have nothing to compare it against. I have tried a couple of GPS devices and found them to have a learning curve and time consuming to use on the gold course. I was surprised and delighted at how easy the Nikon Callaway Diablo Octane Rangefinder is to use and how fast it operates. It is small enough to keep in my pocket and not interfere with my swing. Thus, I always have it with me if I need it.”
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