Altar II mechanical keyboard with ultra-thin profile, featuring a unique magnetic dial on a desk.

Altar II: Revolutionizing Keyboards with a 4.75mm Thin Profile and Magnetic Dial Feature

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Written by John Oliver

2026-10-17

The Altar II mechanical keyboard, a groundbreaking product by London startup Electronic Materials Office (EMO), is redefining slim with its astonishing 4.75mm thickness. Engineered from solid aluminum, this device is a blend of luxury and innovation, perfect for Mac users but compatible with Windows and Linux too. Featuring a magnetically detachable volume and media dial along with red backlighting and haptic feedback, the Altar II promises up to 30 days of battery life.

Set to launch on Kickstarter on November 10, this modern keyboard will retail for $349. However, an early reservation on EMO’s website allows potential buyers to secure it for $249 with a refundable $1 deposit. The device is expected to ship by early summer 2027.

The Passion Behind the Altar II Mechanical Keyboard

Founder Andrew Emerson’s journey from software designer to keyboard innovator began during the pandemic. After exploring subpar market options, he endeavored to create a visually appealing, high-performing mechanical keyboard. His initial Altar I prototype laid the groundwork, quickly gaining traction after gaining attention on Hacker News.

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Detailed view of the keyboard's magnetic control dial and sleek keys.
(Image credit: Andrew Emerson)

Emerson’s aim was to combine the best features of mechanical and slim keyboards. The mechanical switches of the Altar II provide a tactile experience without the bulk typically associated with such devices. This streamlined design is not just about aesthetics—it offers enhanced ergonomics and portability.

Technological Sophistication and Design Philosophy

Beyond its slender profile, this thin keyboard design is packed with technology: wireless Bluetooth connectivity, haptic feedback, built-in speakers, and a magnetic dial. These features embody the dual goals of miniaturization and increased utility, reflecting the broader trends in tech advancement in mechanical keyboards.

Side profile of the keyboard showcasing its thin, modern design.
(Image credit: Andrew Emerson)

A Team Effort

While Altar I was a solo venture, the complexity of this new model has ushered in a talented team. Industrial design and day-to-day management remain Emerson’s domain, while Metric Designworks’ Steven and Jessica Nersesian handle mechanical engineering and CAD. Embedded engineer Kurtis Lew leads on firmware, with Moritz Plattner overseeing electrical aspects. This collaborative synergy is crucial for turning the ambitious design into reality.

Introducing the M-Dial

The M-Dial, a standout feature of the Altar II, is a magnetically detachable, customizable dial that fits seamlessly onto the keyboard. It simplifies volume control and media navigation with intuitive click functions. The ease of 3D printing additional dials allows for personalization, accommodating user preferences.

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From Altar I to the Future: What’s New?

The Altar II represents a generational leap from its predecessor, with only essential elements carried over. Its thickness has been reduced by almost 70%, and updates include redesigned keycaps, stabilizers, and a new switch platform. These enhancements elevate user experience significantly.

Tom May, an expert in art, design, and technology, has chronicled this evolution, highlighting the Altar II’s significant strides in keyboard engineering and user interfacing, making it a trailblazer for the industry.

Altar II mechanical keyboard with ultra-thin profile, featuring a unique magnetic dial on a desk.
(Image credit: Andrew Emerson)

Sources & Links

Source: creativebloq.com

Frequently asked questions

What is the thickness of the Altar II keyboard?

The Altar II mechanical keyboard has an astonishing thickness of 4.75mm.

How long is the battery life of the Altar II?

The Altar II promises up to 30 days of battery life.

How much does the Altar II cost on Kickstarter?

The Altar II will retail for $349, but an early reservation on EMO’s website allows potential buyers to secure it for $249 with a refundable $1 deposit.

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