# Ocular Eye Cup Massa for Nikon DK-23 / DK-21 models, eyepiece accessory

**URL:** https://aio.lv/en/product--massa-sb1281--11831027
**Data updated:** 2026-03-09 14:41 (EET)
**Category:** Electronics Accessories
**Manufacturer:** Massa
**Manufacturer code:** SB1281
**EAN:** 5904647810327
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 8.49 €
**Prices and availability valid until:** 2026-07-14 23:59
**Price without VAT (21%):** 7.02 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--massa-sb1281--11831027

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 02.07.2026 | free |
| Pickup points | 07.07.2026 | 1.99 EUR |
| Courier delivery to door | 07.07.2026 | 4.99 EUR |

## Summary description

Replacement ocular eye cup by Massa compatible with Nikon DK-23 and DK-21 eyepieces. Designed to fit the specified Nikon viewfinders, it provides a cushioned interface between the user’s eye and the eyepiece for improved comfort and stray-light blocking. Suitable for photography, field observation and general use with compatible Nikon cameras and optical devices.

## Long description

The Massa ocular eye cup is a replacement eyepiece accessory designed to fit Nikon DK-23 and DK-21 viewfinders. It provides a soft, cushioned interface between the user’s eye and the camera eyepiece, helping to block stray light and improve viewing comfort during extended use. The cup is shaped to align with the specified Nikon eyepiece contours, allowing secure seating and straightforward attachment when mounted on compatible viewfinders.
Advantages
The eye cup reduces peripheral light intrusion and helps maintain consistent visibility in bright environments. Its cushioned rim enhances comfort for prolonged shooting or observation sessions and helps stabilize the eye position for accurate framing. The product is compact and lightweight, offering a low-profile solution that does not add significant bulk to the camera setup.
Suitable for
Photography with Nikon cameras using DK-23 or DK-21 viewfinders
Field observation and outdoor shooting where stray light may affect visibility
Studio or controlled-environment use where eye comfort and stability are needed
Key specifications
Compatibility: designed for Nikon DK-23 and DK-21 eyepieces
Material: soft, cushioned rim for comfort
Function: blocks stray light and provides eye contact cushioning
Form factor: low-profile eyepiece cup that mounts to specified viewfinders
How to use
Align the Massa eye cup with the eyepiece frame of the compatible Nikon DK-23 or DK-21 viewfinder and press gently until it seats securely. Ensure the cup is fully engaged and the cushion rim forms an even contact around the eyepiece. When removing, grasp the cup at its perimeter and pull evenly to avoid twisting or damaging the eyepiece surface. Clean the cup with a soft, dry cloth; avoid solvents or abrasive cleaners.
Usage recommendations
For best results, install the eye cup before starting extended shooting or observation sessions. Regularly check that the cup is seated correctly to maintain light-blocking performance and replace the cup if the cushion shows signs of wear or deformation.

## FAQ

### How much does the Massa ocular eye cup for Nikon DK-23 / DK-21 cost, and is it available for purchase?

The price is 8.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 10 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 02.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay. All transactions are 100% secure and encrypted.

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All Massa products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized Massa service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

https://aio.lv/img/cache/product/11831027/67231653_large.webp