What switches are used in the Altar II keyboard?

Altar II uses custom dual-steel-arm scissor mechanical switches with a laterally mounted tension spring, providing 1.8mm vertical key travel and a 40gf actuation force within a 4.75mm thin chassis.

What is the M-Dial and can it be customized?

The M-Dial™ is a magnetically detachable rotary controller for media and shortcuts. It comes with standard and low-profile variants in the box, and EMO publishes 3D-printable files for user customization.

Does Altar II require software to function?

No. While the companion app provides advanced customization on macOS, all user settings are stored directly on the keyboard, allowing full functionality on macOS, Windows, and Linux without software.

How long does the battery last and how quickly does it charge?

Altar II offers up to 30 days of battery life under normal use. Fast charging over USB-C provides up to two days of usage from a two-minute charge.

What sustainable materials are used in Altar II?

The keycaps are molded from REGEN™ polymer containing over 50% recycled plastic, the chassis is machined from recyclable aluminium, and the packaging is 100% plastic-free paper and sugarcane pulp.

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Scheduled launch — Aug 26, 2026

Altar II is listed on AI Kaptan and will enter the daily launch competition on that day. Community upvotes open on launch day.

Hardware

Paid

Altar II

An ultra-thin 4.75mm production mechanical keyboard for Mac featuring custom scissor mechanical switches, haptic feedback, a detachable M-Dial, and red LED backlighting.

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Rating

Reviews

Upvotes

about 2 hours ago

Listed

Custom Keyboards

Hardware

Mechanical Keyboards

Mac Accessories

Minimalist Hardware

Consumer Electronics

Sustainable Hardware

Tool information

Provider

Electronic Materials Office®

Platforms

Hardware

macOS

Windows

Linux

Languages

English

Added to directory

about 2 hours ago

Last updated

about 2 hours ago

Rating

Not available

Pricing

Paid

About Altar II

What the tool does and who it's for

Altar II by Electronic Materials Office® is an ultra-thin, premium 75% layout mechanical keyboard engineered for macOS. Built into a 4.75mm CNC-machined 6061 aluminium unibody, it features custom dual-steel-arm scissor mechanical switches with 1.8mm key travel, a magnetically detachable volume/media control (M-Dial™), long-wavelength red LED NiteLite™ backlighting, and a Harmonic Synthesiser haptic feedback system with an integrated speaker. The keyboard uses REGEN™ recycled polymer keycaps and connects via Bluetooth 5.0 or USB-C, offering up to 30 days of battery life.

Key capabilities

Ultra-thin 4.75mm CNC-machined 6061 aluminium unibody chassis

Custom dual-steel-arm scissor mechanical switches with 1.8mm travel and 40gf actuation force

Magnetically detachable and swappable M-Dial™ media controller with open 3D-printing specs

Harmonic Synthesiser haptic feedback system paired with a built-in speaker for tactile cues

NiteLite™ long-wavelength amber-red LED backlighting to preserve night vision

REGEN™ polymer keycaps made from at least 50% recycled plastic

Dual-layer Inertial Damper™ acoustic isolation system with custom elastomer footpad

ESPtype™ regional key shaping system to optimize touch typing accuracy

Dual connectivity via Bluetooth 5.0 and USB-C fast charging

Native macOS companion app written in Swift for custom keybindings and haptics

Pricing

Paid — plans below

Reservation Deposit

Secures $100 off launch price
Locks in $249 Kickstarter reservation tier price
Fully refundable prior to campaign launch

Kickstarter Reservation Tier

Kickstarter Early Bird

$279

Available during first 48 hours of Kickstarter campaign
Includes Altar II keyboard and standard accessories

General Retail Price

$349

Standard retail pricing post-Kickstarter
Includes full warranty and standard packaging

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