Kowa TE-80XW 40x Extreme Wide Eyepiece
The Kowa TE-80XW 40x Extreme Wide Eyepiece delivers an immersive viewing experience with 40x magnification and 39 m field of view for TSN-99 scopes, or 35x and 45 m for TSN-88/880/770/66 series, allowing you to see more and locate subjects faster. Its advanced optical design with field flattener and XD lens ensures ultra-sharp, uniform images with minimal chromatic aberration. Fully waterproof, dust-resistant, and digiscoping compatible, it works seamlessly with Kowa SYSTEM accessories, including the TSN-EX16 1.6x extender, for enhanced magnification up to 64x.
The Kowa TE-80XW 40x Extreme Wide Eyepiece offers an immersive, wide-angle viewing experience that transforms your spotting scope into a truly engaging optic. With a 40x magnification and 39 m field of view on the TSN-99 series, or 35x magnification and 45 m field of view on the TSN-88, 880, 770, and 66 series, it allows you to see more of your surroundings and locate subjects quickly. Its extreme 80-degree field of view makes observing landscapes, wildlife, and sporting events breathtakingly immersive.
Kowa’s advanced optical design incorporates a field flattener and XD lens, producing uniform, ultra-sharp images with virtually zero chromatic aberration. Fully waterproof and sealed against the elements, the eyepiece features KR lens coatings to reduce dust, dirt, and other particles, ensuring a clear, pristine view. Designed for digiscoping, it delivers vignette-free, ultra-sharp images and is fully compatible with Kowa SYSTEM accessories, including the TSN-EX16 1.6x extender, allowing magnification up to 64x with TSN-99 or 56x with TSN-88/880/770/66, making it a game-changing accessory for serious observers.
- Magnification 40x (TSN-99) / 35x (TSN-88, 880, 770, 66)
- Field of View (at 1000 m) 39 m (TSN-99) / 45 m (TSN-88/880/770/66)
- Compatible Series TSN-99, TSN-88, TSN-880, TSN-770, TSN-66
- Optical Design Field flattener with XD lens
- Lens Coating KR anti-dust coating
- Waterproof Yes
- Sealed Against Elements Yes
- System Compatibility Fully compatible with Kowa SYSTEM accessories, including TSN-EX16 1.6x extender
- Maximum Magnification with Extender 64x (TSN-99) / 56x (TSN-88/880/770/66)
- Extreme 80-degree wide-angle eyepiece for a highly immersive viewing experience
- 40x fixed magnification for TSN-99 series and 35x for TSN-88/880/770/66 series
- Wide field of view to locate subjects quickly and see more of your surroundings
- Advanced optical design with field flattener and XD lens for ultra-sharp, uniform images
- Virtually zero chromatic aberration for accurate colour rendering
- Fully waterproof and sealed for reliable performance in all weather conditions
- KR lens coating to reduce dust, dirt, and particle buildup
- Digiscoping compatible, providing vignette-free, high-quality images
- 100% compatible with Kowa SYSTEM accessories, including the TSN-EX16 1.6x extender for enhanced magnification
- Kowa TE-80XW 40x Extreme Wide Eyepiece
- Kowa Lifetime Warranty
Our aim is to ensure that your order arrives with you as soon as possible and in the safest, most cost-effective means.
Please Note: Shipping charges may be subject to additional surcharges if out of area or over weight restrictions.
Please Note: DPD SHIPMENTS REQUIRE THE CUSTOMER TO SHOW A PIN CODE ON DELIVERY - READ MORE: HERE
COURIERS
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We use DPD , RoyalMail, TNT and UPS courier services for all our orders whether dispatching to the UK or International. As soon as your order has been dispatched you will receive an email with your unique tracking number. We are unable to add delivery notes to your order regarding safe spaces or neighbour deliveries. If you require this service it can be arranged directly with the courier once the parcel is in their network.
IN-STORE ITEMS
These are items that we have in-stock and will be sent out for delivery as soon as possible. We aim to dispatch all orders within 1-2 working days, but during busy periods dispatch may be delayed by a day or so. If you would like to purchase the item in person then please call ahead to arrange an appointment: 01803 611 895.
PRE-ORDER ITEMS
These are usually items that are going to be out-of-stock for a number of weeks or are in short supply. By purchasing a Pre-Order Item you are in effect paying a deposit for your goods. As soon as the item is back in stock yours will be dispatched within 24 hours where possible. Please see individual product pages for current back-in-stock dates. In rare occasions, these dates can be changed by the manufacturers so we recommend staying in contact with Optics Warehouse depending on the product lead time.
INTERNATIONAL DELIVERY & TAXES
In addition to the above information If your delivery address is outside of the UK you may be subject to import duties and taxes, which are levied once a shipment reaches your country. Any such additional charges for customs clearance must be borne by you. You should note that customs policies vary widely from country to country. Optics Warehouse advises each customer to contact their local customs office for further information if they are in any way unsure of local duties or liabilities. Cross border shipments are subject to opening and inspection by customs authorities which means some packages may be opened and re-sealed.
NEED HELP?
If you require any further assistance, please call us on 01803 611 895 or email sales@opticswarehouse.co.uk
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A NOTE ABOUT DPD SHIPMENTS:
- Please be advised that we have now introduced DPD Pins to all DPD orders from Optics Warehouse.
- If your shipment is being sent from Optics Warehouse via DPD you will be sent a Pin Code that must be shown to the courier upon delivery.
- The pincode is sent VIA email & TEXT message. A valid email address and mobile number must be provided at checkout. Emails will be sent from "Riviera House 3PL" - if you do not receive this email please check your junk or spam folders.
- Please note that if you do not display your pin code to the courier driver upon delivery, you will not be able to have your item and you may need to schedule another delivery date to show a valid pin.
- Please view the attached slides HERE for further information!

















