GB Start time: 16th May 2025
GB End time: 15th June 2025

Before purchase, you must read and accept following Terms and Conditions of Esu67 Groupbuy

1. This is a “Groupbuy” sale. Upon purchase, you acknowledge thatestimated shipping time is Q3 2025, and delay may occur due to but limited to conditions like: shipping delay introduced by any unforeseeable production issue.
2. After purchase, you will be charged immediately.
3. Due to the nature of“Groupbuy” salethat we will start to arrange productionimmediately after sale conclude, we generally do not allow cancellation.If you do need to cancel before GB ends, we review requestson a case-by-case basis at our discretion. If cancellation is accepted,a 3% payment processing fee will be withheld on refund.
4. We reserve the right to cancel orders which we deem violating our sale T&C.
5. This is a keyboard kit and does not come with switches and keycaps.

Intro

Hello everyone, this is EASZOO STUDIO.

We are thrilled to introduceESU67 a collaborative masterpiece with Bat Knight Studio, featuring a fully aluminum unibody design that integrates a dust cover and foldable wrist rest.

Inspiration Behind the Name

The name draws from the classic line in *The Book of Songs*: “” (“Pursuing dreams is like rowing upstream; the path is arduous but rewarding”). It embodies our brand philosophy: Sail with dreams, brave the waves, and forge ahead relentlessly. We hope every user who chooses “Yisu” will fearlessly chase their goals. Remember, 2025 is not farpersistence will lead you to your destination.

Design Journey

Since January 2024, weve dedicated over a year to perfecting this project. The tri-fold aluminum wrist rest posed unprecedented challenges, far surpassing plastic counterparts. After 10+ iterations of hinge designs, countless prototypes, and rejections from 7-8 factories claiming “impossible machining,” we persevered. Today, ESU67 stands ready to redefine your keyboard experience.

Colorways

Midnight

Glacier Silver

Sun Blue

Design Philosophy

“ESU67” is a foldable keyboard that integrates a dust cover and wrist rest. When unfolded, it serves as a wrist rest; when closed, it becomes a protective dust cover. Unlike traditional designs, this version features atri-fold all-aluminum unibody paired with our newly developed magnetic wrist rest structure, enabling effortless assembly and disassembly. No matter how you flip it, the design remains sleek and functionalmaximizing both practicality and customization potential.

Key Design Motivations

1.Focus on Front-Facing Aesthetics

During the planning phase, our team questioned:“Why do most custom keyboards prioritize backside designs? Once placed on a desk, the back becomes invisible!” To address this, we reimagined the front-facing experience. The tri-fold “ESU67” ensures visual appeal from every angle. The magnetic wrist rest allows users to swap materials effortlesslychoose from leather, aluminum and forged carbon fiber. Say goodbye to cold hands in winter and hello to limitless creativity!

Innovative Wrist Rest Construction

The wrist rest is built from three independent aluminum panels, connected not by traditional hinges but via 8 metal pins and magnets. Using the included magnetic tool, users can easily disassemble the panels for custom color combinations, DIY patterns, or material swapsbreaking free from conventional limitations.

Hall Effect Power Management

We integrated a Hall effect sensor to automate power control:

• Close the wrist rest: Keyboard powers off, preventing accidental keystrokes and saving battery.
• Open the wrist rest: Keyboard powers on instantly.Ideal for cat owners worried about curious paws!

CNC Aluminum Magnetic Top Case

TheCNC-machined aluminum top case offers option of forged carbon fiber material

Backside Design Philosophy

The rear panel features a minimalist heart-shaped sketch by Eazsoo Studio, symbolizing“love at first touch.”

Structural Overview

1. Magnetic Quick-Release & Gasket Design
   1. Magnetic snap-off system for easy disassembly.
   2. Gasket-mounted structure with silicone dampeners, paired with a 3.5mm-thick sound-dampening stack:
      • Imported PORON switch foam
      • Switch pad (IXPE)
      • Sound-optimizing PET film
   3. PCB: 1.2mm black-core design with per-key flex cuts in the alphanumeric zone for balanced flex and stability.
   4. Tri-mode connectivity (wired, Bluetooth 5.1, 2.4GHz wireless) with QMK/VIA support for effortless key remapping.
   5. Includes a 2.4GHz receiver with the PCB.

1. Modular Battery Compartment

1. 1. Separate battery housing isolates the battery and daughterboard from the main internals.
   2. Magnetic pin connectors replace traditional ribbon cables, simplifying internal swaps and reducing installation risks.
   3. Benefit: Effortlessly remove the internal assembly without tedious cable management, significantly improving user-friendliness and error tolerance.

Specifications

• Front Height: 21mm
• Weight: ~1.75kg (unbuilt) / ~2.2kg (built)
• Dimensions:
  • Closed: 32612348mm
  • Open: 32619748mm

Colors: Midnight Black, Glacier Silver, Sun Blue, Red

Finishes: Anodized 6063 aluminum (220-grit texture).

Included Accessories

• Full sound-dampening kit (PORON foam, switch pads, PET films)
• FR4/PC plate (choose one)
• 2 3000mAh batteries, 2.4GHz receiver
• Magnetic tool, spare screws, and decorative stickers

Optional Upgrades:

• Carbon fiber top case
• Forged carbon fiber/leather wrist rest panels