Opus 88

Opus 88 Harmony Mocha Mousse Eyedropper Fountain Pen

$170.51

Opus 88's tribute to Pantone's 2025 Colour of the Year, the Harmony Mocha Mousse defies expectations with its striking translucent purple barrel, soft cream grip detailing, and rose gold accents—a refreshing departure from conventional coffee-themed pens.

Designed to captivate collectors seeking distinctive character, this eyedropper fountain pen combines visual elegance with practical innovation, making it an essential addition to any curated stationery collection.

Fitted with a #6 steel Jowo nib, it fills via eyedropper mechanism with impressive ink capacity. The clever valve lets you write freely during long sessions, then seal it shut for travel without worry.

This is an eyedropper pen—a filling system that's uncommon in modern pens but brilliantly practical. You fill it using the included pipette, drawing ink directly into the barrel.

The built-in valve seals the ink supply above the nib, making it safer to carry and preventing leakage during travel. It also stops the pen from burping ink when your hand warms it up.

In practice, it's simple: unscrew the valve slightly before a long writing session, tighten it when you're done. For quick notes, the ink already in the feed is ready to go. Opus 88 has perfected this Japanese-style filling method—it's their signature.

Comes gift boxed.

  • eye dropper filling system
  • pipette included
  • #6 steel Jowo nib
  • Gift boxed
  • Made in Taiwan

About Opus 88

Opus 88 is a highly respected Taiwanese fountain pen brand that has carved out a distinct niche in the stationery world; they are the modern masters of the "Japanese-style" eyedropper pen.

View all Opus 88 pens we stock