Altar II keyboard

Altar II

Mechanical miracle.

$349 $249

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M-Dial close-up
Side profile
Top view
Hero view 4
Mobile view 1
Mobile view 2

Shockingly thin, fully mechanical. Altar II combines a superlative typing experience with an unbelievable design.

Watch the reveal trailer
Hero full width

A mechanical miracle. An incredibly precise, tactile typing experience in a remarkably thin chassis.

Key switch close-up

Amazing feel. Thanks to breakthrough engineering, Altar II houses a fully mechanical switch inside a tiny chassis.

Switch mechanism

Durable design. Steel construction means an incredibly durable mechanism with long operating life.

Switch comparison

Vertical challenge. A preloaded tension spring arranged laterally rather than vertically enables a vertical travel depth of just 1.8mm.

Four point seven five millimetres. Impossibly thin and sleek, Altar II redefines the low profile keyboard category.

Altar II

4.75mm

Fully Mechanical
Altar II side profile

Apple Magic Keyboard

10.09mm

Non-Mechanical
Apple Magic Keyboard side profile

Logitech MX Keys

20.50mm

Non-Mechanical
Logitech MX Keys side profile

NuPhy Air75

21.00mm

Fully Mechanical
NuPhy Air75 side profile

Keychron K2

30.00mm

Fully Mechanical
Keychron K2 side profile

IBM Model M

50.00mm

Fully Mechanical
IBM Model M side profile

Introducing M-Dial. A magnetically detachable, clickable, swappable dial.

Intuitive. Twist for volume adjustment, single click for play/pause, double click for skip, triple for back. Press and hold for Siri.

Detachable. M-Dial snaps off quickly and easily for travelling or stowing Altar II away.

Swappable M-Dial variants

Swappable. Swap to the included low-profile variant of M-Dial, or choose from additional shapes and sizes.

3D printed M-Dial

BYO(M)D. Design and 3D print your own M-Dial. 3D files, drawings and specifications will be published publicly online.

M-Dial app customisation

Customisable. All M-Dial functionality is completely customisable using the Altar II companion app.

Feels like an epiphany. Harmonic Synthesiser enables crisp, subtle, expressive haptic feedback.

Harmonic Synthesiser

Harmonic Synthesiser enables new ways to interact with your computer through gentle, delightful haptic feedback. It enhances the typing experience and is engineered alongside M-Dial for real-time simulated ticks. It also gives tactile feedback about the state of Altar II, like when it wakes and connects to your computer.

Haptic feedback interactions

Novel interactions. Holding a modifier key gives a smooth, oscillating hum, and a gentle pop lets you know when a shortcut has been completed.

Real-time haptic notifications

Subtle real-time feedback. Altar II taps you when you receive notifications, reminders, or alerts from your Mac.

Haptic configuration app

Fully configurable. Tune intensity and behaviour of haptic feedback in the EMO app.

Built-in speaker

A high fidelity speaker built into Altar II enables subtle audio feedback — like wake sounds, and charging chimes.

Made for Mac.

Native Swift app

Fully native. A lightweight, delightfully designed app, written in Swift and crafted specifically for macOS.

Customization options

You're in control. Customise Altar II by changing key bindings, M-Dial behaviours, backlight, haptic and audio levels.

App-specific shortcuts

App-specific shortcuts. Create your own shortcuts for Figma, DaVinci Resolve, Visual Studio Code, or whatever app you like.

Haptic notifications

A deeper feeling. Haptic feedback for system events like notifications, alerts, and reminders thanks to deep integration with macOS.

Portable settings

Grab'n'go. All your settings live on Altar II. Take them with you anywhere, on any computer or OS — no app needed.

Follow the light. NiteLite preserves night vision, reduces eye strain and helps you sleep better.

NiteLite ambient light sensor

Here when you need it. NiteLite only activates in low ambient lighting conditions, such as at night.

NiteLite sleep better

Sleep better. NiteLite uses a long-wavelength amber-red light that won't affect your body's circadian rhythm, meaning you can sleep better at night.

NiteLite night vision preservation

See clearly. NiteLite reduces eye strain and preserves your eyes' natural night vision.

Sounds divine. A dual layer Inertial Damper provides understated acoustics and responsive key feedback.

Floating foundation. The Inertial Damper system is composed of dual layers: A silicone membrane between the logic board and monobody, and an oversize elastomer footpad below. This system suspends the typing platform for total acoustic and vibration isolation.

Altar II exploded view

Typing test

Recorded on pre-production hardware with Zoom H5, 24-bit/48kHz, XY stereo, 40cm above device, 80Hz high-pass.

The devil’s in the details.

ESPtype key shapes

ESPtype. The breakthrough EMO typing system denotes different regions of the keyboard by key shape, making touch typing effortless.

Battery casket

Battery casket. A purpose-designed chamber housing a high-density battery, speaker, and precision electronics.

Typography

Typography. GT Flexa and Tobias form the typographic foundation of Altar II.

Mac layout

Mac layout. Command, Option, Control, Function — right where you expect them.

Compact footprint

Compact Footprint. A 75% layout with complete function row and full-size arrow keys.

Colours

Colours. Comes in any colour. As long as it's black.

ESPtype key shapes

ESPtype. The breakthrough EMO typing system denotes different regions of the keyboard by key shape, making touch typing effortless.

Battery casket

Battery casket. A purpose-designed chamber housing a high-density battery, speaker, and precision electronics.

Typography

Typography. GT Flexa and Tobias form the typographic foundation of Altar II.

Mac layout

Mac layout. Command, Option, Control, Function — right where you expect them.

Compact footprint

Compact Footprint. A 75% layout with complete function row and full-size arrow keys.

Colours

Colours. Comes in any colour. As long as it's black.

Sacred geometry. A super slim frame ensures a comfortable, ergonomic typing position.

Standard mechanical keyboard

Typical mechanical keyboard wrist angle

Typical mechanical keyboards have a tall leading edge that requires wrist extension when in use. Over long periods this can cause strain.

Altar II

Altar II wrist angle

With a sub 5mm thin chassis, wrist extension is minimal when using Altar II. This reduces likelihood of carpal tunnel syndrome or repetitive strain injuries.

Grand design. An intense focus on miniaturisation, density and engineering was needed to fit so much in such an unbelievably small package.

Spacebar technology

Spacebar. Multiple technologies are housed under the spacebar, including the Harmonic Synthesiser, proximity sensing system, LED matrix driver, wireless antenna, and central processing unit.

M-Dial plinth

M-Dial plinth. The M-Dial plinth interior is exceptionally dense, containing integrated circuits for the ambient light sensor, fast charging, and Hall Effect sensor array that powers M-Dial.

Battery casket

Battery casket. Housing dense technology in tight spaces — combined with vertically expanding the battery casket — creates space for the largest, highest density battery possible.

We moved Heaven for Earth.

REGEN polymer

REGEN polymer. Plastic in Altar II is made from at least 50% recycled content.

Recyclable aluminium

Recyclable aluminium. A chassis machined from a single block of infinitely recyclable aluminium.

Plastic-free packaging

Plastic-free, compact packaging. Packaging made entirely from paper and biodegradable sugarcane pulp. Minimised packaging volume means more devices per pallet, and fewer shipping trips overall.

Power efficiency

Incredible power efficiency. Best-in-class power management means less energy drawn, and less total charge-time.

Power that compels.

Up to

2 days usage
in 2 minutes

of charging

‡ when charged with standard USB-C port.

Up to

30 days

battery life with typical use

† Based on a typical 8 hour work day, including 30 minutes of backlight-on time per day.

Up to

2 days usage
in 2 minutes

of charging

‡ when charged with standard USB-C port.

Up to

30 days

battery life with typical use

† Based on a typical 8 hour work day, including 30 minutes of backlight-on time per day.

A match made in Heaven.

XL desk mat

Mat, Desk, XL Oversize desk mat made from completely recycled materials.

Supplementary M-Dial pack

M-Dial Pack, Supplementary A collection of five swappable M-Dials in strange shapes and sizes.

Hot-weather field cap

Cap, Field, Hot Weather Low profile, unstructured cap embroidered with EMO branding. Suitable for warm climates

Softshell field case

Case, Field, Softshell Slimline textile transportation case designed for Altar II. Includes dedicated M-Dial pouch.

Altar II keyboard
USB-C cable and M-Dials
Field manual
EMO stickers

Typical contents: a 1pcs Altar II keyboard b 1pcs coiled USB-C to USB-C cable, c 1pcs M-Dial, standard issue, d 1pcs M-Dial, low profile, e 1pcs field manual (front), decorative print (reverse), f 5pcs EMO stickers.

Technical specifications

Height 4.75mm
Width 299mm
Depth 116.5mm
Firmware ZMK, Zephyr-based Real-Time Operating System (RTOS)
Switches Dual steel arm scissor switch w/ retention spring, 40gf actuation force
Materials Regen polymer, 6061 aluminium, TPU footpad, silicone membrane, FR4 logic board
Battery Life Up to 30-day battery life with normal use
Connectivity 2x Bluetooth 5.0 Low Energy (LE) channels 1x USB-C
OS Support Apple macOS 12 (Monterey) and up, Microsoft Windows 10 and up
Companion App Compat. macOS 26 Tahoe and up

Technical staff

Embedded Eng. Kurtis Lew Mike Snyder
Electrical Eng. Moritz Plattner
Mechanical Eng., DFM, Manufacturing Steven Nersesian (Metric Designworks)

M-Dial

Harmonic Synthesiser

Inertial Damper

ESPtype

REGEN Polymer

Fast charging

NiteLite

Native Mac app

Ultra thin

Fully mechanical.



Altar II

Altar II keyboard

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