Kowa 99 mm Spotting Scope and TE-11WZ II 30-70x zoom eyepiece

KOWA SKU: TSN 99A Zoom Kit


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For almost two decades, Kowa’s TSN-880 PROMINAR spotting scope series was and still is to this day the envy of the sporting optics industry. It’s testament to the generations of Japanese optical engineers that have developed Kowa’s unique optical design and engineering techniques over many years. But pioneers do not stand still - they push forward and onwards, always trying to improve, it’s what Kowa have done for over 60 years and they were not about to stop now.


The new TSN-99 PROMINAR Series is the evolution of over six decades of Japanese optical design and technology. It utilizes the very best from Kowa’s optical heritage and benefits from features, technology and engineering developed by generations of Kowa optical experts.



At the heart of all Kowa PROMINAR flagship optics are Kowa’s unique pure fluorite crystal lenses and the TSN-99 PROMINAR features their largest objective lens ever produced at 99mm. The goal which Kowa achieved was to create a scope delivering outstanding low light performance and exquisite detail free from chromatic aberration. To create an optic delivering one of the brightest and widest view of nature.


Crystal clear - a phrase you will often hear loosely used in the world of sporting optics, but take a look through a Kowa TSN-99 PROMINAR spotting scope and that’s exactly what you will get, both physically and visually.


A solid piece of pure fluorite crystal was crafted into a perfectly polished and multi-coated lens to deliver the true definition of what is crystal clear and the ultimate viewing experience.


For the first time in any Kowa spotting scope, a Kowa XD lens with extremely low dispersion characteristics was used for the convex lens of the TSN-99 PROMINAR. The concave lens paired with the fluorite crystal lens is made with special dispersion properties to reduce chromatic aberration even further. This special combination virtually eliminates chromatic aberration even at high magnification. It redefines the standards of colour brilliance. This technology is the result of many years of Kowa optical design.




The dual focus system is one of the defining features of Kowa flagship spotting scopes, highly engineered to give ultimate control, the TSN-99 PROMINAR is no exception, the optic is a dream to use out in the field. The dual focus mechanism is the gateway to controlling the image between your eye and the scope. Exquisite engineering is refined to make operation flawless.
Quick focus allows for fast action to bring your subject in to detail in just a few smooth revolutions, whilst Fine focus gives pin-point, finger-tip control offering the ultimate in focussing accuracy with minute adjustments possible even when wearing gloves. The responsive focus system is tuned to not only respond effortlessly for conventional observation, but increases performance for applications such as digiscoping when accurate focus is critical.



The TSN-PROMINAR looks like no other scope, a statement of style and sophistication with bold details.

But looks aren’t everything, every slender curve has been considered at the design stage and serves a purpose with comfort and ease of operation at the forefront. Smooth ergonomics combined with high end engineering delivers a scope that is easy to use out in the field for long periods of time.


Under the beautiful shell of TSN-99 PROMINAR, a super strong magnesium alloy chassis is utilized, this lightweight material is created using a sophisticated moulding process called thixotrophic moulding, the result: A material with all the strength benefits of metal whilst still reaming lightweight.

By employing the use of a 100% magnesium alloy structure, the TSN-99 PROMINAR series spotting scope is one of the most compact and lightweight in its class of large objective spotting scopes making it more portable than many other models.

The objective lens has further protection from the elements with Kowa’s unique KR coating which actively repels dirt, moisture and dust from building on the surface.


The accessory collar and bayonet mount of the TSN-99 PROMINAR is 100% compatible with our KOWA SYSTEM accessory range giving you access to interchangeable eyepieces including the TE-11WZ II 30-70x wide zoom and the new TE-80XW 40x extreme wide as well as digiscoping adapters and other optical accessories such as the Kowa TSN-EX16 1.6x extender, creating a truly flexible optical tool for many applications.

The new TSN-99 PROMINAR spotting scope series includes both an angled (TSN-99A) and straight (TSN-99S) model.