
44mm Twist-up Eyecups for SRBC APO binoculars
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Sky Rover Optics has newly launched a 44mm twist-up eyecup set for the Banner Cloud (Hereinafter referred to as “SRBC”) APO series binoculars. This upgrade is designed to better accommodate users with deeper eye sockets, enhancing comfort when using the binoculars and improving the overall viewing experience. The 44mm twist-up eyecup set is produced using a modular design, making replacement extremely convenient. Simply rotate the original eyecups counterclockwise to remove them and install the new 44mm eyecups. Additionally, the new eyecup set allows eyeglass wearers to get approximately 1mm closer to the eyepiece (when fully retracted) compared to the original eyecups.

Eyecup Comparison
Original Eyecups
The max diameter is approximately 48.5mm, and the min diameter is about 46mm. The min distance between the two eyecups is 7mm.

44mm Eyecups
The max diameter is approximately 45mm, and the min diameter is about 43mm. The min distance between the two eyecups is 11mm.

Replacement Eyecup Installation Guidance
Step 1: Preparation

Step 2: Remove the Original Eyecups
Step 3: Install the 44mm Eyecups

Note: Due to the diopter compensation mechanism on the right eyepiece, after both eyecups are screwed in, the eyepiece height may not be at the same level. This is a normal phenomenon.
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Last year, our Banner Cloud APO binoculars received tremendous support and trust from users. At the same time, we also received a great deal of customer feedback requesting a smaller eyecup. After carefully collecting your valuable suggestions, we have specifically designed a replacement small eyecup that is more suitable—and production is now complete!
To show our appreciation for the customers who have consistently supported SR, we have decided to offer the new eyecup for free to customers who have purchased the Banner Cloud APO binoculars. Customers only need to cover the shipping cost. Pls feel free to contact us for purchasing.
Please send your shipping information and purchased order record to us together, thanks!