Note: Eagle Optics only ships Vortex products to US addresses.
Take a big step on your birding path by joining the American Birding Association! For a limited time, Eagle Optics makes it even easier and more affordable by giving you a $45 annual membership for just $15! To add a $15 membership to your purchase of this binocular, use the coupon code ABAMEMBERSHIP during checkout.
The 42mm Diamondback delivers the best of everything in a rugged package at a suprisingly affordable price. Phase corrected, BaK-4 prisms and fully multi-coated optics deliver bright views with distinctive detail and sharp resolution. Customers approve of the comfortable eyecup design and the ergonomically balanced feel. With waterproofing and fogproofing, you won't worry about rain, snow, heat, or cold. Vortex's VIP Warranty means your Diamondback is meant to last for generations.
Fully Multi-coated Lenses
Increase light transmission with multiple anti-reflective coatings on all air-to-glass surfaces.
Enhances resolution and contrast through roof prisms.
Optimize light transmission.
Appreciated for a streamlined shape and durability.
Provides a secure, non-slip grip.
Twist up and down for comfortable viewing with or without eyeglasses.
Center Focus Wheel
Adjusts both binocular barrels at the same time.
Right Eye Diopter
Adjusts for differences in a user's eyes. Located by the right eyepiece.
Can be mounted using standard ¼-inch threading. Adapter sold separately.
Optics are sealed with O-rings to prevent moisture, dust, and debris from getting inside the binocular.
Barrels are filled with argon gas to inhibit internal fogging.
I purchased the Vortex Diamondback 8 x 42 for my 18 year old son. He is doing a lot of outdoor activities and needed a better, more reliable pair of binoculars. He is very happy with his new binocs. I have borrowed them and may purchase a pair for myself soon. I would recommend this pair of binoculars for a non-professional naturalist.
Great for Birding
Dave from Illinois, Chicago Suburbs
My neighbor, who is an environmental engineer, recommended Eagle and Vortex.
He is working with my daughter (12) and I to get into birding.
Great upgrade to what we were using. Beautiful clarity and field of vision.
Helps to find the little birds hidden in the trees.
We have identified 60 birds since March for her Life List.
Eagle was great to work with.
We're thinking of a second pair so we won't have to share.
ps: Check out Peterson's Bird app on the iStore. Best $2.99 I have ever spent.
Mike Martin from Mt. Carroll, IL
I'm an amateur astronomer and only recently a birder. I'm recently retired and wanted a nice (not too expensive) pair of binoculars for birding. These Vortex Diamondbacks are impressive for the money. The clarity of the optics was amazing. The padded neckstrap and zippered clamshell case were nice touches as well. Unfortunately the manual succumbed to my standard poodle puppy. I hope I can get another manual from Eagle Optics.
Len from Cranbrook, British Columbia
I bought the 8x42 Diamondback binoculars last year on the advice of a friend and have not looked back! I use them primarily for hunting and they are awesome to look through for extended periods of time as your are spotting for animals. They work great for those low light conditions at dawn and dusk.
Bernard P. Giroux from S. Dartmouth, MA
These binoculars deliver more than expected in terms of clarity, ease of use, field of vision, field weight and other factors. For the money, these glasses are exceptional. I am now thinking about a pair for myself, since this first pair were a gift.
Outstanding value for the price!
Kevin Cross from New York
These are high quality binoculars and are ideal for eyeglass wearers. I used them while hiking & kayaking in the Adirondack Mts and their performance was superb. Images are very steady at distance and bright (even in subdued light). The neck strap is very comfortable. Minor problems; the tethered lens covers can detach easily if you're not careful and I watched one sink to the bottom of the lake. Luckily, replacements are readily available from Eagle Optics. Also the diopter wheel is stiff to operate. Overall I am very happy with my purchase.
Michael Proseus from Upstate NY
I was looking for a quality roof prism bino for general nature viewing. I considered the Nikon Monarch and the Leupold Cascades before talking to one of Eagle's product advisors. He suggested the Vortex Diamondback, which costs 25%-30% less. I bought a pair. They are better than the Monarchs and the Cascades, in my opinion. They're very well made, smooth focusing, bright, clear, sharp throughout the entire field, and have great color rendition thanks to the phase correction. They're everything I was looking for, and at an unbeatable price. Eagle's customer service is top-notch, and their prices are great as well!
Crystal Clear - Easy Grip
David Carrera4 from Canton, MI
I decided to upgrade from poro-prism binos to the Diamondbacks, what a smart move. These low priced roof prism binos are crystal clear and bright. Compared to my Nikon Naturalist binos, these are an order of magnitude better. Maybe the Razor is sharper or brighter, but I cannot see how. They have a nice wide field of view which was important to me. The twist down eye cups are firm with a detent in the middle position. I can use these with or without my glasses. The diopter adjust is nicely done and holds its position. There are grippy fingers molded into the rubbor armor that feel nice to the touch - these binos are well balanced and easy to grip and don't feel too heavy. The thumbwheel requires more than one rev to focus, but feels great and steady. The neck strap has a wide comfy area for the back of the neck. The lens caps can stay with the bino - which is a nice feature. For the price, these have to be at the top of their class - maybe surpassing many many higher priced products.