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Description
Welch Allyn GS 777 Elite Wall Unit - Coaxial Ophthalmoscope & Diagnostic OtoscopeGreen Series 777 Wall Transformer Help reduce facility cost with a more energy efficient product Help reduce risk of cross contamination by reducing contact with no on off switch Help improve work flow with contoured handles that automatically turn on off Quickly and easily upgrade from the Welch Allyn 767 Wall Transformer to the GS 777 Wall Transformer 11720 Coaxial Ophthalmoscope Halogen light for true tissue colour and consistent, long lasting
Green Series™ 777 Wall Transformer
- Help reduce facility cost with a more energy efficient product
- Help reduce risk of cross contamination by reducing contact with no on/off switch
- Help improve work flow with contoured handles that automatically turn on/off
- Quickly and easily upgrade from the Welch Allyn 767 Wall Transformer to the GS 777 Wall Transformer
11720 | Coaxial Ophthalmoscope
- Halogen light for true tissue colour and consistent, long-lasting performance.
- The coaxial optics produce a shadow-free spotlight, easier entry into undilated pupils and a larger field of view compared to standard ophthalmoscopes.
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6 apertures:
- Micro - allows quick entry into small, undilated pupils.
- Small - provides excellent view of fundus through an undilated pupil.
- Large - general examination of the eye through dilated pupil.
- Fixation - graduated cross-hairs for measuring eccentric fixation or locating lesions.
- Slit - used to determine levels of lesions and tumors.
- Cobalt blue - used with flourescein dye to view small lesions, abrasions and foreign objects on the cornea.
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2 filters can be used in conjunction with any of the above apertures:
- Red-Free filter - filters out red light for easy identification of veins, arteries and nerve fibers.
- Polarising filter - virtually eliminates corneal reflection.
- 28 focusing lenses with a range of -25 to +40 diopters, adjustable via easy-to-reach maywheel.
- Rubber brow-rest prevents scratching of eyeglasses.
- Variable illumination strength via the handle rheostat dial.
Rheostat Control
Vary the power of illumination with the smooth turn of a dial.
Aperture Selection Disc
Switch easily between 6 apertures via a disc on the head.
Six Apertures
A wide range of practical apertures to select from.
LENS Selection Disc
Focus on the fundus, cornea, iris and other ocular structures.
Two Filters
Red-free or polarising filter can be used in tandem with any aperture.
25020 | Diagnostic Otoscope
- The Halogen HPX™ lamp provides light output for true tissue colour and consistent, long-lasting performance.
- Fibre optics project cool light to the distal tip with no reflections or obstructions for superior views of the tympanic membrane.
- The wide-angle viewing lens allows for instrumentation under magnification.
- Insufflation port for manipulation of the tympanic membrane.
- A sealed system for pneumatic otoscopy and accurate diagnosis of otitis media.
- Variable illumination strength via the handle rheostat dial.
Halogen + Fibre Optics
Allows a completely unobstructed view in true tissue colour.
Rheostat Control
Vary the power of illumination with the smooth turn of a dial.
Wide-angle Viewing Lens
With easy access for cleaning.
Insufflation port
Attach an insufflation bulb to test the mobility of the tympanic membrane via pneumatic otoscopy.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.1 ★★★★★
Based on 19 reviews
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Product Reviews
★★★★★ 5
Really rough and tough and able to endure some pretty gnarly chewing!
Size: 3 PCS
These are some really stout, durable, tuff balls that are designed to endure some pretty rough chewers! They don't have the best bounce capability. If you throw one down onto pavement, it's not going to bounce back to you the same way a tennis ball would. It's probably got about half the comeback as a tennis ball, so to get the same return you would have to throw it about twice as hard as you would a tennis ball. But the balls were not designed to bounce around, they were designed to throw to your dog and play fetch and be able to endure some pretty rough gnawing and chewing while your dog is returning the ball to you.
I have a 30 lb westie, and these balls are pretty much the perfect size for his medium size chomper. He is able to pick the ball up and carry it around with great ease, he is able to catch it in the air with no problem. Now my little 12 lb chihuahua is not able to carry the ball around, his mouth is just too small too be able to pick the ball up.
In my opinion the asking price for these balls is really fair and reasonable! I would absolutely recommend this product to my friends and family!!
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Reviewed in the United States on May 21, 2026
★★★★★ 5
Nice quality balls for heavy chewers that are easy to clean
Size: 3 PCS, Size: 3 PCS
Nice quality heavy duty balls for strong chewers. I love that these don't have those holes in them that so many balls do that collect grossness and dirt. These are solid and easy to clean. My 9 week old puppy can pick them up and carry them around from the side of her mouth. But the next door 5 year old Labrador is obsessed with them. But then again he is obsessed with balls in general. I just like that these seem to hold less gunk than the others we give him to play with frequently. And they seem to have help up to his chewing just fine.
They are reasonably priced for a set of 3 and the colors are nice and visible in the grass which is important. I would be careful to pick them up before mowing the lawn because these are solid and somewhat heavy and I could definitely see a mower just slinging them through a window or off your siding. Overall a nice set of balls that are easy for a human to throw and fit the hand comfortably. They are easy to clean and they are apparently appreciated by the local retrieval expert next door.
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Reviewed in the United States on May 22, 2026
★★★★★ 5
Finally, a Ball Our Aggressive Chewer Loves and Hasn’t Destroyed Instantly!
Size: 3 PCS
We’ve gone through more dog toys than I care to admit, because our dog treats them like a personal demolition project! Since she’s a very aggressive chewer, I usually don’t expect toys to last long, so these balls were a really pleasant surprise.
They were an instant hit for fetch, chase, and chew time. I love that they have a nice bounce that keeps playtime fun and unpredictable, and the bright colors make them easy to spot in the yard instead of disappearing into the grass. Best of all, they’ve held up far better than many other dog toys we’ve tried. Normally I’m cleaning up shredded toy remains within minutes, but these have proven to be much tougher.
Of course, no toy is truly indestructible with a determined chewer, but these have definitely impressed me and earned their place in our toy rotation. If you have a dog that loves interactive play and tends to destroy toys at record speed, these are absolutely worth trying. Easy 5 stars from our house!
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Reviewed in the United States on May 26, 2026
★★★★★ 5
Fun and durable toy for dogs of all sizes
Size: 3 PCS
We have three dogs and one of their favorite kinds of toys is balls. These are the perfect size that all three of the dogs can play with them. We have size ranges from pug to Golden Retriever. Even the pug can carry one around. Mostly she just chases them across the floor. They are durable plastic that the dogs can chew on and so far have not punctured. They also haven't started to flake or splinter like some plastic will when it gets older. I like the bright colors because that makes it easier to find in the grass. They aren't extremely hard so if someone inadvertently gets hit with one it isn't terribly painful. They are a good weight to be able to throw repeatedly without getting a tired arm and yet they aren't lightweight so much that they don't go where you aim. When they get too dirty I just pop them in the dishwasher. I appreciate the value of getting three balls in one package.
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Reviewed in the United States on May 23, 2026
★★★★★ 5
Simple Dog Toys Done Well
Size: 3 PCS, Size: 3 PCS
Honestly, as far as simplicity goes, this is simplicity done right. Three simple decently sized toys in a nice bright package. They're the right size, they're the right texture, and they feel fairly well-made. They do still have that ugly little manufacturing seam running across them, so that's noticeable, but otherwise they're perfectly fine. No real issues.
Nice texture, good variation of texture, and the colors are vibrant. Again, they're the right size. They're firm but not overly hard. Kind of almost like a baseball where there's a little bit of give to them, but not like they're made out of stone. So no major problems with this one. My dog has been having a fantastic time with them over the past few days.
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Reviewed in the United States on May 26, 2026
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