Pentel Cielina Multi-Function Pen | 0.5mm Black & Red Ballpoint + Mechanical Pencil | 3-in-1

Pentel Cielina Multi-Function Pen — 0.5mm | Black & Red Ballpoint + Mechanical Pencil

Three essential writing functions. One beautifully considered pen. The Pentel Cielina brings together black and red 0.5mm ballpoint ink and a built-in mechanical pencil in a single refined barrel — the complete toolkit for students, professionals, and anyone who annotates, corrects, and drafts as part of their daily work. Pentel's Cielina is named for the sky (cielo) — and its clean, airy design lives up to the name.

Key Features

• 3-in-1 Multi-Function System — Black ballpoint, red ballpoint, and mechanical pencil in a single barrel — three writing modes, one instrument, zero clutter on your desk
• 0.5mm Fine Ballpoint Tips — Both black and red ink use a precise 0.5mm tip for neat, controlled lines — finer than the standard 0.7mm ballpoint for cleaner handwriting and annotation
• Pentel Ballpoint Ink — Smooth-flowing, quick-drying oil-based ink in both colors; reliable on standard, glossy, and coated paper with minimal smearing
• Built-in Mechanical Pencil — Fully functional pencil mode for diagrams, sketches, erasable notes, and exam use — compatible with standard 0.5mm mechanical pencil lead
• Elegant Cielina Barrel — Pentel's Cielina design language emphasizes a slim, refined silhouette with a quality finish — a multi-function pen that doesn't look or feel like a compromise
• Lightweight & Balanced — Slim profile and well-distributed weight make it comfortable for extended writing sessions without fatigue
• Made in Japan — Engineered to Pentel's exacting quality standards

What's Included

• Black ballpoint ink (0.5mm)
• Red ballpoint ink (0.5mm)
• Mechanical pencil function (0.5mm lead)

Specifications

• Brand: Pentel
• Model: Cielina
• Ink Colors: Black, Red
• Pencil: 0.5mm mechanical pencil (built-in)
• Tip Size: 0.5mm (ballpoint) / 0.5mm (pencil)
• Ink Type: Oil-based ballpoint
• Mechanism: Multi-function click selector
• Origin: Japan

Who Is This For?

Students who need black for notes, red for corrections, and pencil for diagrams — all without switching pens. Teachers and academics who mark up, annotate, and draft in a single session. Professionals who want a compact, elegant multi-function pen that doesn't sacrifice refinement for versatility. And anyone who has ever wished their desk could be just a little less cluttered.

Frequently Asked Questions

Q: How do I switch between the three writing modes?

A: The Cielina uses a multi-function click selector mechanism. Each mode — black ballpoint, red ballpoint, and mechanical pencil — has a dedicated selector at the top of the barrel. Press the corresponding selector to extend that tip; only one mode is active at a time, keeping the other tips safely retracted. The selectors are color-coded for instant identification.

Q: Why black and red specifically — is a blue ink version available?

A: The Cielina's black-and-red combination is the most practical pairing for academic and professional use: black for primary writing and red for correction, annotation, grading, and emphasis. This focused two-color system keeps the barrel slim and elegant while covering the two most essential ink colors for document work. The addition of the mechanical pencil completes the toolkit without adding bulk. If you need more colors, consider the Zebra blen 4+S which offers four ballpoint colors plus a pencil.

Q: What lead size does the mechanical pencil function use?

A: The built-in mechanical pencil uses standard 0.5mm mechanical pencil lead. It is compatible with 0.5mm leads from major brands including Pentel, Pilot, uni, Zebra, and KOKUYO. Choose your preferred grade — HB for general use, B or 2B for darker lines and exam answer sheets.

Q: Is the ballpoint ink quick-drying? Is it suitable for left-handed writers?

A: Yes on both counts. The Cielina uses oil-based ballpoint ink in both black and red, which dries almost immediately on contact with paper. This makes it significantly more smear-resistant than gel ink — an excellent choice for left-handed writers who frequently encounter smearing with slower-drying inks.

Q: How does the Cielina compare to the Zebra blen 4+S or the Uni SE-1000?

A: Each pen serves a distinct multi-function need. The Pentel Cielina offers 2 ballpoint colors + pencil in a slim, refined barrel — the most compact and elegant 3-in-1 option. The Zebra blen 4+S offers 4 ballpoint colors + pencil with Zebra's low-vibration blen ink technology — maximum color versatility. The Uni SE-1000 is a 2-color ballpoint only (no pencil) with a full metal minimalist barrel — optimized for professional aesthetics. Choose Cielina for the best balance of compactness, elegance, and 3-in-1 functionality.

Q: Can I refill the ballpoint ink cartridges?

A: Yes. The Cielina uses standard Pentel multi-function ballpoint refills. When either color runs out, replace the spent cartridge with a compatible Pentel refill of the same size. This makes the Cielina a long-term writing investment rather than a disposable pen.

Q: Is the Cielina comfortable for extended writing sessions?

A: The Cielina's slim, balanced barrel is designed for comfortable everyday use. For very long writing sessions where hand fatigue is a primary concern, a dedicated ergonomic pen such as the Pilot Dr. Grip Classic would provide more cushioning. The Cielina excels as an all-day carry pen for mixed writing tasks — switching between modes frequently — rather than as a marathon single-session writing instrument.